Proving Identities

Key Questions

• What does it mean to prove a trigonometric identity?

  Answer:

  Hope this helps.

  Explanation:

  The functions sine, cosine and tangent of an angle are sometimes referred to as the primary or basic trigonometric functions.

  The remaining trigonometric functions secant (sec), cosecant (csc), and cotangent (cot) are defined as the reciprocal functions of cosine, sine, and tangent, respectively.

  Trigonometric identities are equations involving the trigonometric functions that are true for every value of the variables involved

  

  Each of the six trig functions is equal to its co-function evaluated at the complementary angle.

  The Trigonometric Identities are equations that are true for Right Angled Triangles

  Periodicity of trig functions. Sine, cosine, secant, and cosecant have period 2π while tangent and cotangent have period π. Identities for negative angles

  Sine, tangent, cotangent, and cosecant are odd functions while cosine and secant are even functions.

  

  sankarankalyanam · 2 · Aug 5 2018

• What does it mean to prove a trigonometric identity?
• How do you prove #\csc \theta \times \tan \theta = \sec \theta#?
• How do you prove #(1-\cos^2 x)(1+\cot^2 x) = 1#?
• How do you show that #2 \sin x \cos x = \sin 2x#? is true for #(5pi)/6#?
• How do you prove that #sec xcot x = csc x#?
• How do you prove that #cos 2x(1 + tan 2x) = 1#?
• How do you prove that #(2sinx)/[secx(cos4x-sin4x)]=tan2x#?
• How do you verify the identity: #-cotx =(sin3x+sinx)/(cos3x-cosx)#?
• How do you prove that #(tanx+cosx)/(1+sinx)=secx#?
• How do you prove the identity #(sinx - cosx)/(sinx + cosx) = (2sin^2x-1)/(1+2sinxcosx)#?
• How do you prove the identity #tan^2x/(secx+1)= (1-cosx)/cosx#?
• How do you prove the identity #(tanx)/(cscx + cotx) = secx - 1#?
• How do you prove that #(1 + tan theta)[1 + tan(1/4 pi - theta)] = 2#?
• How do you prove that #cos(theta)csc(theta)=cot (theta)#?
• How do you prove that #{(tanx + secx - 1)/(tanx - secx + 1)} = (1+sinx)/cosx#
• How do you prove that #(1+tanx)/(sinx+cosx)=secx#?
• How do you prove that #secx - cosx = tanx * sinx#?
• How do you prove that #(tanx)(cosx)=cscx#?
• How do you prove the identities #Cosx/secx+sinx/cscx=sec^2x-tan^2x#?
• How do you prove #(sinx+cosx)/sinx - (cosx-sinx)/cosx = sec x csc x#?
• How do you prove #tan^2x/(Secx+1)+1 = secx#?
• How do you prove that #Cosx(Tanx+Cotx) = cscx#?
• How do you prove #sin(x+y)*sin(x-y)=(sinx)^2-(siny)^2#?
• How do you verify #sinx + cosx cotx = cscx#?
• How do you prove the identity #[1-sinx]/secx = (cos^3x)/(1+sinx)#?
• How do you prove: #cotx-cosx=cotx(1-sinx)#?
• How do you prove #(sinx+cosx)^2 + (sinx-cosx)^2 = 2#?
• How do you prove #(1- cosx)/sinx = tan(x/2)#?
• How do you solve: #sin2x - sinx = 0#?
• How do you prove #(1 + sinx + cosx)/(1 + sinx - cosx) = (1 + cosx)/sinx#?
• How do you prove that #(sinx-cosx-1)/(sinx+cosx-1)=(cosx+1)/sinx#?
• How do you prove #1- [(cos^(2)x)/(1+sinx)]= sinx#?
• How do you prove #sinx + cosx = -1#?
• How do you prove that #(1-cosx)/sinx = sinx/(1+cosx)#?
• How do you prove: #cosx- (cosx/(1-tanx))= (sinxcosx)/(sinx-cosx)#?
• How do you prove #(sinx + cosx)^2=1 + sin2x#?
• How does #[(sinx/cosx) +(cosx/sinx)]# equal #sinx^2+cosx^2#?
• How do you prove #tanx + (cosx)/(1+cosx) = secx#?
• How do you prove that #(1 + tan(x/2)) / (1 - tan(x/2))= tan x + sec x#?
• How do you simplify #(1-tan^2(x)) /( 1+tan^2(x))#?
• How do you solve #tan(x+ y) = (tan x + tan y) / (1 - tan x tan y)#?
• How do you prove #(tan x / (1 - cot x)) + (cot x / (1 - tan x)) = 1 + sec x csc x#?
• How do you prove the identity #tan (x-pi/4)= (tan x - 1)/(1 + tan x)#?
• How do you prove the following trig identity: #tan(x + 45°) - tan(45° - x) ≡ 2tan2x#?
• How do you prove #tan(x + (pi/2)) = -cotx#?
• How do you prove #cos2x= (1-tan^2(x))/ (1+tan^2(x))#?
• How do you prove that #cosx/(1-sinx) - 1/cosx = tanx#?
• How do you show the #secx + 1 + (1 - tan^2x)/(secx -1) = cosx/(1 - cosx)#?
• How do you prove the identity #1 / (1- cosx) + 1/ (1+ cosx) = 2 csc^2x#?
• How do you prove #((1+cosx) / sinx) + (sinx / (1 + cosx)) = 2 csc x#?
• How do you simplify the identify #sin^2x/(1-cosx) = 1+cosx#?
• How do you prove #(1-cosx)(1+secx)=sinxtanx#?
• How do you prove #(cscx + cotx)^2 = (1 + cosx) / (1 - cosx)#?
• How do you prove the identity: #(1+cosx+sinx)/(1-cosx+sinx) = (1+cosx)/(sinx)#?
• How do you simplify the identity: #(secx-1)/(1-cosx)=secx#?
• How do you prove #[cosx/(1-sinx)] + [(1-sinx)/cosx]=2secx#?
• How do you verify #(1/(sinx+1))+(1/(cscx+1))=1#?
• How do you prove #1-cosx^2/(1+sinx)= sinx#?
• How do you prove #(1+cosx)(1-cosx)=sin^2x#?
• How do you prove: #cos (x)/(1+sin (x)) + (1+sin (x))/cos (x) = 2 sec (x)#?
• How do you verify #(sin x)(tan x cos x - cot x cos x) = 1 - 2 cos2x#?
• How do you prove #(sinx + cosx)(tanx + cotx)=secx + cscx#?
• How do you prove #[(cotx+1)/(cotx-1)]=[(1+tanx)/(1-tanx)]#?
• How do you verify trigonometric Identities: #cot^2 x +csc^2 x = 2csc^2 x - 1#?
• How do you prove # [(1)/(1-sinx)]+[(1)/(1+sinx)]=2sec^2x#?
• How do you prove #Sinx/Cosx+Cosx/Sinx = (Sin^2xCos^2x)/(CosxSinx)#?
• How do you prove #(cosx) / (cscx - 2sinx) = (tanx) / (1-tan^2x)#?
• How do you prove #[(2tanx)/(1-tan^2x)]+[(1)/(2cos^2x-1)]= (cosx+sinx)/(cosx-sinx)#?
• How do you prove #2tan(x)sec(x) = (1/(1-sin(x))) - (1/(1+sin(x)))#?
• How do you prove #cos4x=1-2sin^2(2x)#?
• How do you prove #cos^4(x)-sin^4(x)=cos2x#?
• How do you prove #(tan x + 1) / (tan x -1) = (sec x + csc x) / (sec x - csc x)#?
• How do you prove #(cos^2x) / (sin^2x) * (1) / cos^2x = csc^2x#?
• How do you prove #(tan(x)-1)/(tan(x)+1)= (1-cot(x))/(1+cot(x))#?
• How do you prove #(1 - sin2x) /(cos2x) = (cos2x) / (1 + sin2x)#?
• How do you prove #1+1/tan^2x = 1/sin^2x#?
• How do you prove #sin3x = 3sinx - 4sin^3x#?
• How do you prove #Cosx + (sinxtanx) = secx#?
• How do you prove #sin4x = 4sinxcos^3x - 4sin^3xcosx#?
• How do you prove #(1 - tanx) / (1 + tanx) = (1 - sin2x) / (cos2x)#?
• How do you prove #(sin x+ 1) / (cos x + cot x) = tan x#?
• How do you prove #(1 + tan^2x)/(1-tan^2x) = 1/(cos^2x - sin^2x)#?
• How do you prove #cot^2 x/ (1+csc x) = (1-sin x)/ sin x#?
• How do you prove #(secx+tanx)((1-sinx)/cosx)=1#?
• How do you prove #(cot A + 1)^2 = csc^2 A + 2 cot A#?
• How do you prove : #Sin4x - cos4x + 1 = 2Sin2x#?
• How do you prove the identity #(sectheta- tantheta)^2 = (1-sintheta)/(1+sintheta)#?
• How do you prove #(2 cos 3x)/(sin 4x - sin 2x)=cscx?
• How do you verify the identity #4 csc 2x = 2 csc^2x tan x#?
• How do you verify the identity #cot(0-(pi/2)) = -tan 0#?
• How do you verify the identity: #tan (x + pi/2) = -cot x#?
• How do you verify the identity: #[sin(x) / csc(x) - 1 ] = [ sin (x) + 1 / cot^2 (x) ]#?
• How do you verify the identity: #(cot x) / (csc x +1) = (csc x -1) / (cot x)#?
• How do you verify the identity: #1 - cos 2x = tan x sin 2x#?
• How do you verify the identity: #sec x - cos x = sin x tan x#?
• How do you verify the identity #[(cosx cotx)/1-sin x]-1=cscx#?
• How do you verify the identity #cosxcotx = cscx - sinx#?
• How do you verify the identity #cos 4x + cos 2x = 2 - 2 sin^2 2x - 2 sin^2 x#?
• How do you verify the identity #(1 + tan2u)(1 - sin2u) = 1#?
• How would you verify the identity #(secx-cosx+tanx)/(tanx+secx)=sinx#?
• How do you verify the identity #cos t/(1-sin t) = sec t+tan t#?
• How do you verify the identity: #(secx + cscx )/( sinx + cosx) = cotx + tanx#?
• How do you verify the identity #(tanx - secx + 1)/(tanx + secx - 1) = cosx/(1 + sinx)#?
• How do you verify the identity #cos(α - β) - cos(α + β) = 2 sin α sin β#?
• How do you verify the identity: #cosx cscx/cot^2x=Tanx#?
• How do you verify the identity #(csc x - sin x)(sec x - cos x)(tan x + cot x) = 0#?
• How do you verify the identity #(1+ sinx)/(cos x) + (cos x)/(1+sin x) = 2 sec x?#
• How do you verify the identity: #(1-(cosx-sinx)^(2))/cosx=2sinx#?
• How do you verify the identity #(2tanx)/(1+tan^2x) =sin2x#?
• How do you verify the identity #(sin2x)/(sinx) = 2/(secx)#?
• How do you verify the identity #cosx+sinxtanx=sec x#?
• How do you verify the identity: #sin2x=(tanx)(1+cos2x)#?
• How do you verify the identity #(tan x)/(Sec x-1)=(sec x+1)/ (Tan x)#?
• How do you verify this identity: #(cosx)/(1+sinx) + (1+sinx)/(cosx) = 2secx#?
• How do you verify the identity #cot (theta-pi/2)=-tan theta#?
• How do you verify the identity: #sin(A+B) = (tanA+tanB)/(secA secB)#?
• How do you verify the identity #sec^2(x/2)= (2secx + 2)/(secx + 2 + cosx)#?
• How do you verify the identity: #(cot(t)-tan(t))/(sin(t)cos(t)) = csc^2 (t) - sec^2 (t)#?
• How do you verify the identity: #(sinx+cosx)^2=1+sin2x#?
• How do you prove the identity #(sin^3 x + cos^3 x)/(sin x +cos x) = 1 - sin x cosx#?
• How do you verify the Identity: #(1+cos x+ sinx)/(1+cos x-sin x)=sec x+tan x#?
• How do you verify the identity #(tan x + cos x) /( 1+sin x )= sec x#?
• How do you verify the identity #sin4x= 4sinxcosx(1-sin^2x)#?
• How do you verify the identity # tan(x/2 + pi/4) = secx + tanx#?
• How do you verify the identity #tanx+cotx=2csc2x#?
• How do you verify the identity #sin(pi/2 + x) = cosx#?
• How do you verify the identity: #cos^2x-sin^2x=1-2sin^2x#?
• How do you verify the identity of: #cos^3x sin^2x=(sin^2x-sin^4x)cosx#?
• How do you verify the identity. #tan x + pi/2= -cot x#?
• How do you verify the identity #cotx- pi/2 = -tan x#?
• How do you verify #4tan^4 + tan^2x-3 = sec^2x (4tan^2x - 3)#? kinda hard please with all the steps thanks!?
• How do you prove that #sin(2A) = (2tan(A))/(1 + tan^2(A))#?
• How do you prove that #cot^3x/cscx = cosx(csc^2x-1)#?
• How do you prove #sec^6x(secxtanx) - sec^4x(secxtanx) = sec^5xtan^3x#?
• How do you prove #(sinx+cosx)(Tanx+cotx)=secx+cscx#?
• How do you prove #(Sec x/Sin x)-(Sin x/Cos x)=Cot x#?
• How do you prove #sin(pi+x) = - sinx#? Double Angle Question: 1.) Express sin x/2 in terms of cos x Thank you so much!?
• How do you prove #(1 + sin 2A) / (cos 2A) = (cos A + sin A) / (cos A - sin A)#?
• How do you prove #tan x - 1 = (sin^2 x - cos^2 x)/(sin x cos x + cos^2 x)#?
• How do you prove #10sin(x)cos(x)=6cos(x)#?
• How do you prove #cot^2x - cos^2x = cot^2cos^2#?
• How do you prove # secx(csc^2x)-csc^2x = secx / (1 + cosx)#?
• How do you prove #(1-cos^2)(1+cos^2)= 2sin^2-sin4#?
• How do you prove #tan^2xsin^2x=tan^2x + cos^2x-1#?
• How do you prove #sinθ/cos(0.5θ) = 2sin(0.5θ)#?
• How do you prove #(CosA + CosB)^2 + (SinA + SinB)^2 = 2[1 + cos(A - B)]#?
• How do you prove #sinx cosx tanx = 1-cos^2x #?
• How do you prove #cos^2x - sin^2x = 2cos^2x - 1#?
• How do you prove #sin x = 1 - 2 cos^2x#?
• How do you prove #sinx+cosx=(2sin^2x-1)/(sinx-cosx)#?
• How do you use trigonometric identities to transform one side of the equation into the other #Cos theta Sec theta = 1#?
• How do you prove #tan(2A)/(1+sec(2A))=tan(A)#?
• How do you prove #sin(π+x)+cos(π/2-x)+tan(π/2+x)= -cotx#?
• How do you prove #(sinx+cosx)^2 = 1+2sinxcosx#?
• How do you prove #(1 + csc A)(1 - sin A) = cotA cosA#?
• How do you prove #cos(x) / (1-sin(x)) = sec(x) + tan(x)#?
• How do you prove #tan^2(x) / (sec(x) - 1) = (sec(x) + 1)#?
• How do you prove #cosA/(1-tanA) = (sinA)/(1-cotA)#?
• How do you prove #(cotA-1)/(cotA+1) = (cosA-sinA)/(cosA+sinA)#?
• How do you prove #1/(1-cosA) + 1/(1+cosA)= 2+2cot^2A#?
• How do you prove #1/(1-cos)-1/(1+cos)= 2csc^2#?
• How do you prove #sin^3 x - cos^3 x = (1 + sin x cos x )( sin x cos x )#?
• How do you prove #(1+sinx)^2 + (1-sinx)^2 = 4 - 2 cos^2x#?
• How do you prove #(sinx + cosxcotx)/cotx = secx#?
• How do you prove # (cosx - sinx)/(cos^3x - sin^3x) = 1/(tanxcos^2x + 1)#?
• How do you prove #sin^4x-cos^4x=sin^2x-cos^2x#?
• How do you prove #(sinx-2sin2x+sin3x)/(sinx+2 sin2x+sin3x)= -tan^2(x/2)#?
• How do you prove #(1+ cosx)/(sinx + tanx)=(1 + cos2x )/ sin2x#?
• How do you prove #(1-tanx)/(1+tanx) = (1-sin2x)/(cos2x)#?
• How do you prove #4tanxsecx=((1+sinx)/(1-sinx))-((1-sinx)/(1+sinx))#?
• How do you prove #Cos^2 2A-cos^2 A=sin^2A-sin^2 2A#?
• How do you prove #(2sin^2x -1) /( sinxcosx) = tanx - cotx#?
• How do you prove #(cosx/(1 + sinx)) + (cosx/(1 - sinx)) = 2secx#?
• How do you prove #((sin^2x + 2cosx - 1)/(2 + cosx-cos^2x)) = 1/(1 + secx)#?
• How do you prove #tan² x(1 + cot² x) = sec² x#?
• How do you prove #1 + sin² x = 1/sec² x#?
• How do you prove # ( 1 / (secx - tanx) ) - ( 1 / (secx + tanx ) ) = 2 tan x#?
• How do you prove # (cosA - cotA) / ( 1 - sinA) = - cotA#?
• How do you prove # (secA - 1) / (sin^2A) = (sec^2A) / (1 + secA)#?
• How do you prove #sin(A+B) * sin(A-B) = sin^2 A - sin^2 B#?
• How do you prove #(cos W - sin2W) / cos(2W) + sinW-1 = cot W#?
• How do you prove #sin(2W )/ (1-cos(2W)) = 2csc2W - tanW#?
• How do you prove #cos(x-y)/cos(x+y)=(cot x +tan y)/( cot x- tan y)#?
• How do you prove #sin^2(x)cos^2(x) = (1-cos(4x))/8#?
• How do you prove #(cos2A)/sinA + (sin2A)/cosA = csc A#?
• How do you prove #cos (2x) / (1-sin 2x) = (1 + tan 2x) / (1-tan 2x)#?
• How do you prove # cotA+tan2A= cotAsec2A#?
• How do you verify #(1-cos2t)/ sin t= 2 sin t#?
• How do you verify #sec^2(x)+csc^2(x)=(sec(x)csc(x))^2#?
• How do you verify #2cos^2(x/2)tanx = tanx+sinx#?
• How do you prove #Tan x+Cot x =Sec x Csc x#?
• How do you prove # [sec(x) + csc(x)] / [1 + tan(x)] = csc(x)#?
• How do you verify #(1+cosx)(1-cosx) = sin^2 x#?
• How do you verify #sec^2 x/ tan x = sec x csc x#?
• How do you verify #csc x cos (pi/2 - x) = 1#?
• How do you verify #sin^2 x + sin^2(pi/2 -x) = 1#?
• How do you prove #(csc(t)-1)(csc(t)+1)=cot^2(t)#?
• How do you prove #csc^2(x)-cot^2(x)=1#?
• How do you prove #cscx /(1 + cscx) + cscx /(1 - cscx) = (- 2sinx) / cos^2x#?
• How do you prove #cot^2 A csc^2 A - cot^2 A = cot^4 A#?
• How do you prove #csc2x = 1/2(secx)(cscx)#?
• How do you prove #csc^4x-cot^4x=csc^2x+cot^2x#?
• How do you prove #(1-tanx)^2=sec^2x-2tanx#?
• How do you prove #tanx/secx + cotx/cscx = sinx+cosx#?
• How do you prove #(sec(t)+1)(sec(t)-1)=tan^2(t)#?
• How do you prove #(sec(u) - tan(u))(csc(u)+1)=cot(u)#?
• How do you prove #(csc(-t)-sin(-t))/sin(t) = -cot^2(t)#?
• How do you prove #sin theta cot theta =cos theta#?
• How do you prove #sin theta sec theta- tan theta#?
• How do you prove #tan theta cot theta=1#?
• How do you verify the identity #(csc x - cot x)^2 = (1 - cos x)/(1+cosx)#?
• How do you verify # cos ^2 u - sin ^2 u = 1 - 2sin^2 u#?
• How do you verify #cos ^2 u - sin ^2 u = 2 cos^2 u -1#?
• How do you verify #sin x(1- 2 cos ^2 x + cos ^4 x) = sin ^5 x#?
• How do you verify #csc ^4 -2csc ^2 x +1 = cot^4 x#?
• How do you verify #2 + cos^2 x - 3 cos ^4 x = sin^2 x(2 +3 cos^2 x)#?
• How do you verify #cos^4x - sin^4x = cos^2x - sin^2x#?
• How do you verify #(1-tan^2)/(1+tan^2)=cos^2 - sin^2#?
• How do you verify #cot^2x * sec^2x = csc^2x#?
• How do you verify #(cos^2x) / (sin^2x) * (1) / cos^2x = csc^2x#?
• How do you verify #(csc(t) + cot(t)(csc(t) - cot(t)) = 1#?
• How do you verify #sin^2(x) = (1/2)(1-cos2x)#?
• How do you verify #8sin²xcos²x = 1-cos^4(x)#?
• How do you verify #-(1/2)sec²(x) = -2sin²(x)csc²(2x)#?
• How do you verify #(sect + csct)/(1 + tan^2t) = (sintcost + cos^2t)/ sint#?
• How do you verify #(cot theta - tan theta)/(cot theta + tan theta) = cos 2 theta#?
• How do you verify #sin^2 theta cos ^2 theta = 1/8 [1-cos(4 theta)]#?
• How do you verify # (sinx + tanx) / cosx + 1 = tanx#?
• How do you verify #cos^2x + tan^2x - 1 / cos^2x + sin^2x = 0#?
• How do you verify #cos(x) / (1-sin(x)) = sec(x) + tan(x)#?
• How do you verify #tan^2(x) / (sec(x) - 1) = (sec(x) + 1)#?
• How do you verify #(1-cos2x)/ tanx = sin2x#?
• How do you verify #(1+tan x) / (1+cot x) = 2#?
• How do you verify #cos^4x - sin^4x = 1 - 2sin^2x#?
• How do you verify # 1 + tanxtan2x = sec2x#?
• How do you verify #(1+sinx+cosx)^2 = 2(1+sinx)(1+cosx)#?
• How do you verify # cot (x/2) = tan x/(sec x-1)#?
• How do you verify #tan(x/2) - cot (x/2) = -2 cot x#?
• How do you verify #8sin²xcos²x = 1-cos(4x)#?
• How do you verify #-(1/2)sec²(x) = -2sin²(x)csc²(2x)#?
• How do you verify #(1+cos2x)/(sin2x) = cotx#?
• How do you prove #cos2θ = cos²θ - sin²θ#?
• How do you prove #cos2θ = 1-2sin²θ#?
• How do you prove #cos2A = cos^2 A - sin^2 A#?
• How do you prove #(sinx/(cscx-1))+(sinx/(csc+1))=2tan^2x#?
• How do you prove #(cosx/(1+sinx))+((1+sinx)/cosx)=2secx#?
• How do you prove #-tan^2x+sec^2x=sec^2xcos^2x#?
• How do you prove #cosx-cosxsin^2x=cos^3x#?
• How do you prove #(1-sin^2theta)(1+cot^2theta)=cot^2theta#?
• How do you verify #(1 + cos theta)(1 - cos theta) = sin^2 theta#?
• How do you verify #sin^2 - cos^2 = 2sin^2 theta - 1#?
• How do you prove #1 - 2 sin^2r + sin^4r = cos^4r#?
• How do you prove #csc^2xtan^2x-1=tan^2x#?
• How do you prove #1/(sinxcosx) - cosx/sinx = tanx#?
• How do you prove #cosx - sinx - cos^3x/cosx = sin^2x - tanx#?
• How do you prove # (cscx+cotx)(cscx-cotx)=1#?
• How do you prove #(tan u + cot u)(cos u + sin u) = csc u + sec u#?
• How do you prove #(1+tan x) / (1+cot x) = 2#?
• Question #11cd8
• How do you verify #cot^2 x/ (1+csc x) = (1-sin x)/ sin x#?
• How do you verify #tan^5 x = tan ^3 x sec^2 x - tan^3 x#?
• How do you verify #(sin B + cos B)(sin B - cos B)= 2 sin^2B - 1#?
• How do you verify #cotx-tanx=2cot2x#?
• How do you verify #sec(x+y)= (secx secy)/(1-tanxtany)#?
• How do you verify #2csc2x=secxcscx#?
• How do you verify #tan^2(x) / sec(x) = sec(x) - cos(x) #?
• How do you verify #sin x + cos x + tan x sin x = sec x + cos x tan x#?
• How do you verify #sinx/(1-cosx) + (1-cosx)/sinx = 2cscx#?
• How do you verify #1-tan^2x=2-sec^2x#?
• How do you verify #cosx/(1-sinx)= secx+tanx#?
• How do you verify #cosx-cosxsin^2x=cos^3x#?
• How do you verify #[(cosx - 1)^2] / [sin^2 x] = [1 - cos x] / [1 + cos x]#?
• How do you verify #tan^2θ- sin^2θ=tan^2θsin^2θ#?
• How do you prove the identity #sin x = 1 - 2 cos² x#?
• How do you prove the identity #(1-cos2x) / tanx = sin2x#?
• How do you prove the identity #(sin^2)x (cos^2)x=1 #?
• How do you prove the identity #(sin^4)x-(cos^4)x#?
• How do you prove the identity #cos^2theta(1 + tan^2theta) = 1#?
• How do you prove the identity #sec^2(x)-tan^2(x)=1#?
• How do you prove the identity #cot(x)+sec(x)=(cos(x)+tan(x))/sin(x)#?
• How do you prove the identity #Sin2x = 1#?
• How do you prove the identity #cos2x = (cotx - sin2x) / cotx#?
• How do you prove the identity #tan^4x+tan^2x+1=(1-cos^2x)(sin^2x)/(cos^4x)#?
• How do you prove the identity #tan2XcotX=3#?
• How do you prove the identity #Sec^2(x) + 2 cos(x) + 1/2*csc^2(x) = 5 #?
• How do you prove the identity #(csc theta - 1) / cot theta = cot theta / (csc theta + 1)#?
• How do you prove the identity #-sin^2x = 2cosx - 2#?
• How do you prove the identity # Cos2x-sinx=0#?
• How do you prove the identity #(tan x + sec x - 1) / (tan x - sec x +1) = tan x + sec x#?
• Show that sin 3x = 3 sin x - 4sin^3 x ?
• Prove that tan x = (sin 2x)/(1+cos 2x) . Hence find the value of tan 15° and tan 67.5° , giving your answer in term of surds in simplest form?
• How do I show that #cos theta/ (1 + sin theta)# + #(1+ sin theta)/cos theta# = 2 sec #theta# ?
• How do you prove #cscx = sec(pi/2 - x)#?
• How do you prove # (csc+cot)(csc-cot)=1#?
• How do you prove # (sin+cos)(tan+cot)=sec+csc#?
• How do you prove #sec^4(x)-csc^2(x)=tan^2(x)-cot^2(x)#?
• Question #75d62
• Prove that #cos 3x = 4cos^3 x - 3cos x# ?
• Show that #(2cos^2(x/2)tanx)/(tanx) = (tanx+cosxtanx)/(tanx)#?
• How do you prove #sin x + cot x cos x = csc x#?
• How do you prove #sec x - cos x = sin x tan x#?
• How do you prove #tan (2x)/tan x=2#?
• How do you prove # 1/sec^2 x + 1/csc^2 x =1#?
• How do you prove # sin x/(1-cos x) + (1-cos x)/sin x = 2 csc x#?
• How do you prove #cos(x)tan(X) + sin(x)cot(x) = sin(x) + cos^2(x)#?
• How do you prove #csc x tan x = sec x#?
• How do you prove #cos^2A csc A sec A = cot A#?
• How do you prove #1/(sec D - tan D) + 1/(sec D + tan D) = 2 sec D#?
• How do you prove #csc B/cos B - cosB/sin B = tan B#?
• How do you prove #cos^2β-sin^2β=2cos^2β-1#?
• How do you prove #cos[(pi/2)-x]/sin[(pi/2)-x]=tanx#?
• How do you prove #sec^2((pi/2)-x)-1=cot^2x#?
• How do you prove #sinx(1-2cos^2x+cos^4x)=sin^5x #?
• How do you prove #ln(secθ)=-ln(cosθ) #?
• How do you prove #sin[x+(pi/6)] + sin[x-(pi/6)] = (sqrt3)/2#?
• How do you verify #1/(secx+1 )= cot^2xsecx-cot^2x#?
• How do you verify #((1+sinx)/(cosx))=((cosx)/(1-sinx))#?
• How do you verify #cos^2(x)-sin^2(x)=1-2sin^2(x)#?
• How do you verify #cot^4 x+ cot^2x = csc^4 x - csc^2 x#?
• How do you verify # sec(x)-cos(x)=sin(x)tan(x)#?
• How do you verify #(secx - cscx)/(sin^2 x - cos^2 x) = (secx*cscx)/(cos(-x)-sin( -x))#?
• How do you verify #(sin^3 t + cos^3 t)/(cos2t) = (sec^2 t - tant)/(sect - tant*sect)#?
• How do you verify #(sec(x) - 1)/(1 - cos(x))=sec(x)#?
• How do you verify #((2cos^2C + 3sinC – 3)/(cos^2C)) = ((2sinC-1)/(1+sinC))#?
• How do you verify #sec^4x-sec^2x=tan^4x+tan^2x#?
• How do you verify #(1-cos^2x)(1+cos^2x)=2sin^2x-sin^4x#?
• How do you verify #sin^2xsec^2x+sin^2xcsc^2x=sec^2x#?
• How do you verify #(tanx/(1+cosx)) + (sinx/(1-cosx))=cotx + secxcscx#?
• How do you verify # (1-sinx)/(1+sinx)=sec^2x-2secxtanx+tan^2x#?
• How do you verify #sinx/(1-cosx) - (sinxcosx)/(1+cosx)=cscx(1+cos^2x)#?
• How do you verify #(1+cosx)/(1-cosx) - (1-cosx)/(1+cosx)=4cotxcscx#?
• How do you verify # (1+sinx)/(1-sinx) - (1-sinx)/(1+sinx)=4tanxsecx#?
• How do you verify #2cot 2x = cot x - tan x#?
• How do you verify #(sec x + csc x) (sin x + cos x) – 2 – cot x tan x#?
• How do you verify #(1-cos(x)) / sin(x) = csc(x) - cot(x) #?
• How do you verify #(1 - cos x) / (1 + cos x) = (csc x - cot x)^2#?
• How do you verify # (sin x/ (1 - cos x)) + ((1 - cos x)/ sin x) = 2csc x#?
• How do you verify #cos^4 x - sin^4 x = cos^2 x - sin^2 x#?
• How do you verify #cos^3 * sin^2 x = (sin^2 x - sin^4 x)cos x#?
• How do you verify #1/(secx -1) + 1/(secx +1) = 2cotxcscx#?
• How do you verify #tan^2x-tan^2x*sin^2x=sin^2x#?
• How do you verify #(sin^2x - cos^2x)/(sinx + cosx)=sinx-cosx#?
• How do you verify #sin^4x-cos^4x=1-2cos^2x#?
• How do you verify #(tanx) /(1-cotx) + (cotx) /(1-tanx) = 1 +secx cscx#?
• How do you verify # (-1) / (tanx - secx) = (1 + sinx) / (cosx)#?
• How do you verify #(1 - cosx) / (1 + cosx) = (cotx - cscx)²#?
• How do you verify #(sinx + cosx) / (sinx - cosx) = (secx + cscx) / (secx - cscx)#?
• How do you verify #cos4x = 8cos(^4)x - 8cos²x + 1#?
• How do you verify #(sin^3x - cos^3x) / (sinx - cosx) = (1 + sin2x) / 2#?
• How do you verify #-cot(x/2) = (sin2x + sinx) / (cos2x - cosx)#?
• How do you verify #sin^2(theta)+cot^2(theta)sin^2(theta)=1#?
• How do you verify #csc^2(theta)(1-cos^2(theta))=1#?
• How do you verify #tan(theta)/cot(theta)=tan^2(theta)#?
• How do you simplify #csc θsec θ - cot θ#?
• How do you verify #(1-cos^2x)(1+(1/tan^2x)) = 1#?
• How do you verify #(cotx/sec^2x) + (cotx/csc^2x)= cotx#?
• How do you simplify #tan^2 x- cot^2x#?
• How do you simplify #2cos^2x + cosx -3#?
• How do you simplify #1 - 125tan^3s#?
• How do you simplify #1 – sec² t#?
• How do you simplify #(csc² t - cot² t) / sin² t#?
• How do you simplify #(sin² t - cos² t sin² t) / sin² t#?
• How do you verify #(cos(x))(cos(x)) = 1-sin^2(x)#?
• How do you simplify #(sin^2x-1)/(1+sin^2x)#?
• How do you simplify #(cotx/sec^2x)+(cotx/csc^2x)#?
• Question #e754c
• How do you prove #(sinx+cosx)^4 = (1+2sinxcosx)^2#?
• How do you prove #[(sec^6)x] (secxtanx) - [(sec^4)x] (secxtanx) = [(sec^5)x] [(tan^3)x] #?
• How do you prove #tanx + cotx = secx cscx#?
• How do you prove #(cosx-sinx)/(cosx+sinx)=(cos2x)/(1+sin2x)#?
• How do you prove # -2cos^2x tan(-x)=sin2x#?
• How do you prove #(sinx - tanx)(cosx - cotx) = (sinx -1)(cosx -1)#?
• How do you prove #(sin^3x + cos^3x)/sin^3x = cscx/(1-cosx)#?
• How do you prove #(cosx+ 1)/ sin^3x = cscx/(1-cosx)#?
• How do you prove #sin^2x/ (cos^2 +3cosx+2) = (1-cosx)/ (2+cosx)#?
• How do you prove #(sinx - cosx)^2 +(sin x + cosx)^2 = 2#?
• How do you prove #(sin2x + sin2y)/(cos2x + cos2y) = tan(x + y)#?
• How do you verify #sin(x + pi/6) - cos(x + pi/3) = sqrt3 sin x#?
• How do you simplify #(1 - cos^2 theta)/(1 + sin theta) = sin theta#?
• How do you simplify #(1 + sec theta)/sec theta = sin^2 theta/(1 - cos theta)#?
• How do you simplify #sin(a - b)/sina x cosb = 1 - cota x tanb#?
• How do you simplify #sin theta (cot theta + tan theta) =sec theta#?
• How do you simplify #1- (sin^2 theta/ (1-cos theta))= -cos theta#?
• Question #d6fb5
• How do you use the trig identity #cos2x = cos^2 x - sin^2 x # to verify that #cos 2x = 2 cos^2 x -1#?
• How do you prove Trig Identity #1+tan^2 (x) = sec^2 (x)#?
• What basic trigonometric identity would you use to verify that #(sin x+1)/sin x=1+csc x#?
• How do you find cot x if sin x cot x csc x = √2?
• How do you prove # 1 + 1/(tan^2x) = 1/(sin^2x)#?
• How do you prove # cot^2 x +csc^2 x = 2csc^2 x - 1#?
• How do you prove #tan(x) = sin(2x)/[1+cos(2x)]#?
• How do you prove #secxcscx = sinx + cosxcotx#?
• How do you prove #cot2x = (1+cos4x) / (sin4x)#?
• How do you find tan (x+y) if tan x=5/4 and sec y=2?
• How do you prove #(sinx + tanx) / cosx + 1 = tanx#?
• How do you prove #(cos^2x + tan^2x ) / (cos^2x + sin^2x )-1= 0#?
• How do you prove #2tan(x)sec(x) = (1/(1-sin(x))) - (1/(1+sin(x)))#?
• How do you prove #cos(x) / (1-sin(x)) = sec(x) + tan(x)#?
• How do you prove # tan^2(x) / (sec(x) - 1) = (sec(x) + 1)#?
• How do you prove #csc x - sin x = cos x cot x#?
• How do you prove #cosx(tanx+secx)=sinx#?
• How do you prove #secx+sin^2x+cos^2x=secx#?
• How do you prove #(cos^4x - sin^4x)/sin^2x=cot^2x-1#?
• How do you prove #cos(x)tan(X) + sin(x)cot(x) = sin(x) + cos^2(x)#?
• How do you prove #1 + cot² x = csc² x#?
• How do you prove #sinx/(1-cosx) + (1-cosx)/sinx = 2csc x#?
• How do you prove #sin(x)(cos(x))/(cos^2(x) - sin^2(x)) = tan(x)/(1 - tan(x))#?
• How do you prove # (sin A + tan A) / (1+ cos A) = tan A#?
• How do you prove #(csc x - cot x)^2 = (1 - cos x)/(1+cosx)#?
• How do you prove #(1+tan x) / (1+cot x) = 2#?
• How do you prove #cot(x)cos(x)+sin(x)=csc(x)#?
• How do you prove #Sinx = 1/sinx - cosx/tanx#?
• How do you prove #tan^4 x + 2tan^2 x + 1 = sec^4 x#?
• How do you prove #tan(x/2)= sinx+cosxcotx-cotx#?
• How do you prove #(1 - sin2x) / (cos2x) = (cos2x) / (1 + sin2x)#?
• How do you prove #cos4x=1-2sin^2(2x)#?
• How do you prove #cot^2 x +csc^2 x = 2csc^2 x - 1#?
• How do you prove #cot^2 x +csc^2 x = 2csc^2 x - sin^2(2x)-cos^2(2x)#?
• How do you prove #sin^2 (x) + cos^2 (x) = 1# using other trigonometric identities?
• How do you prove #sin (2x) = 2sin(x)cos(x)# using other trigonometric identities?
• How do you prove #cos2x=cos^2x-sin^2# using other trigonometric identities?
• How do you prove #cos2x=1-2sin^2x# using other trigonometric identities?
• How do you prove that #cot^2x * sec^2x = csc^2x#?
• How do you prove that #(csc x - cot x)^2 = (1 - cos x)/(1+cosx) #?
• How do you prove # sec^2x-tan^2x =cos^2x+sin^2x #?
• How do you prove # (secx-tanx)(secx+tanx) =secx #?
• How do you prove # sec^2xcscx =sec^2x+csc^2x #?
• How do you prove # tan^2x-1 = 1+tanx #?
• How do you prove # sin(a+b) + sin(a+b) = 2sinacosb #?
• How do you prove # sin(a+b)cos(a+b) = (sina)^2 - (sinb)^2 #?
• How do you prove: #1- (sin^2x/(1-cosx))=-cosx#?
• How do you prove: # [(sinx/cosx) +(cosx/sinx)] = sinx^2+cosx^2#?
• How do you prove: #sin^2x/(1-cosx) = 1+cosx#?
• How do you prove: #Cosx + sinx tanx = secx#?
• How do you prove: #secx - cosx = sinx tanx#?
• How do you prove: # cosx*sinx=cosx+sinx#?
• How do you prove: # sinx/cosx + cosx/sinx = 1#?
• How do you prove: #2sinx = cosx#?
• How do you provle #cos (pi-x) =- cosx#?
• How do you simplify #cosx/(1+sinx) + (1+sinx)/cosx#?
• How do you verify #sin x + cos x * cot x = csc x#?
• How do you verify #(1 + csc x)(sec x - tan x) = cot x#?
• How do you verify #(sin x+cos x)^2=1+sin2x#?
• How do you verify #1 + cos 2a = 2/(1+ tan^2a)#?
• How do you verify #2(tan(2A)) * (2(cos^2(2A) - sin^2(4A)) = sin(8A)#?
• How do you verify #cos^2 2A = (1+cos4A)/2#?
• How do you prove #cos(pi/2 + theta) = -sin(theta)#?
• How do you prove #sin x csc (pi/2 - x)= tan x#?
• How do you prove #sec^2 x - cot^2 ( pi/2-x) =1#?
• How do you prove #cos^2x+cos^2( pi/2 - x ) =1#?
• How do you prove #csc (-x) / sec ( - x) =- cot x#?
• How do you prove #(sin x - sin y) / (cos x + cos y) + ( cos x - cos y) / ( sin x + sin y) = 0#?
• How do you prove #( tan A + tan B) / (1-tan A tan B) = (cot A + cot B ) / ( cot A cot B - 1)#?
• How do you simplify # sin(π/2 - x) cscx#?
• How do you prove #sin(pi/6 + x) + sin (pi/6 - x)= cosx#?
• How do you solve #Sin(x + pi/4) + Sin(x - pi/4) = -1#?
• How do you prove #tan (pi - x) = -tanx#?
• How do you prove #sin^(2)(x+π/4)-sin^(2)(x-π/4)=2sinx*cosx#?
• How do you prove #Cotx = -tan(x - pi/2)#?
• How do you prove #sin(pi/4 + x) = cos (pi/4 - x)#?
• How do you verify # tan (x+pi/2)= -cot x#?
• How do you verify #Cos 2x= 2 sin (x+pi/4) cos (x+pi/4)#?
• How do you verify #(tan^2)(sin^2)=tan^2+cos^2 - 1#?
• How do you prove #1/(1+sin) + 1/(1-sin) = 2sec^2# ?
• How do you prove #Sin^2-cos^2=2sin^2-1# ?
• How do you prove #(1+cosx)/sinx + sinx/(1+cosx) = 4#?
• How do you simplify #(sinx/(1-cosx))+((1-cosx)/sinx)#?
• How do you prove #cosx/(1+sinx)-2secx=cosx/(sinx-1)#?
• How do you simplify #secx(cosx+sinx)#?
• How do you verify #(cosx - sinx) ^ 2 + 2 sinx cosx = 1#?
• How do you verify #(1)/(cosx*sinx) - (cosx)/(sinx)=tanx#?
• How do you verify #(cosX+sinX)/(cscX+secX) = (cosX)(sinX)#?
• How do you verify #sinx/cosx + cosx/sinx = 1#?
• How do you verify #(1+tanx)/(1-tanx) = (cosx+sinx)/(cosx-sinx)#?
• How do you prove #Cosx + sinx tanx = secx#?
• How do you prove #cosx= 1/(cosx-sinx tanx)#?
• How do you prove #(secx)/(sinx)-(sinx)/(cosx)=cotx#?
• How do you prove #sinx/cscx + cosx/secx = sinx cscx#?
• How do you prove #(tan x)(cos x)=sin x#?
• Prove that #tanx/(1+secx)+(1+secx)/tanx=2secx#?
• Question #fa425
• How to prove that #sin (pi/2 - theta)# = #cos theta# ?
• Question #d432a
• Question #217eb
• Find the value of #(secx-1)(secx+1)# and #1-sin^2theta/tan^2theta#?
• Question #6a425
• How do you show #e^(it) = cos t + i sin t# ?
• Question #5bbf0
• Simplify the following?
• How do you prove #cos(x + pi/6) + sin(x + pi/3) = (sqrt 3)cos x#?
• How do you prove #2sin((5pi)/6)cos(pi/6)=sin120#?
• How do you prove #-sin( pi/3) = cos ((5pi)/6)#?
• How do you prove #cos(x-pi/6) = 1/2([sqrt3] cosx + sin x)#?
• Question #49c6e
• Question #4aefe
• Question #8331a
• Question #628c9
• How do you prove #sin(pi/2-theta) = cos theta #?
• How do you prove #cos(pi/2-theta)=sin theta #?
• How do you verify #cos (x - pi/2) = -sinx#?
• How do you verify # tan (pi - x) = -tanx#?
• How do you prove # cos(pi/3 + x) + cos(pi/3 - x) = cosx#?
• Simplify #(tanx+secx-1)/(tanx-secx+1)#?
• How do you simplify #sinx/(1 + sinx) - sinx/(1 -sinx)#?
• Question #9695c
• Question #b8301
• Question #7d905
• How do you prove #secx - cosx = tanx * sinx#?
• How do you prove # 2 arcsin x = arccos(1 − 2x^2)#?
• How do you verify # tan^2(a) - sin^2(a)=tan^2(a)sin^2(a)#?
• How do you verify #(sin(x)cos(y)+cos(x)sin(y))/(cos(x)cos(y)-sin(x)sin(y)) = (tan(x)+tan(y))/(1-tan(x)tan(y))#?
• How do you verify #(1-cos^2y + sin^2y)^2 + 4 sin^2y cos^2y= 4 sin^2y#?
• How do you verify #tanx / (1-cosx) = cscx (1+secx)#?
• How do you verify #cos^2x + cos^2(pi/2 - x) = 1#?
• How do you verify #tan(A/2)=cscA-cotA#?
• How do you verify #sin^2 ( x/2) = (cscx-cotx)/(2cscx)#?
• How do you verify #(sin z + cos z) (tan z + cot z) = sec z + csc z#?
• How do you verify #(1+csc(x))/(cot(x)+cos(x)) = sec(x)#?
• How do you verify #cos (pi/2 -x) cos x = cos x#?
• How do you verify #sin x + cos x times cot x = csc x#?
• How do you verify #sin^2 (-x) / tan^2 x = cos^2 x#?
• How do you verify #(tan(x)/(1 + sec(x))) + (1+sec(x)/tan(x)) = 2csc(x)#?
• How do you verify #csc2(theta)=csc(theta)/(2cos(theta))#?
• How do you verify #cos^2(2alpha) - sin^2(2alpha)=cos(4alpha)#?
• How do you verify #(cotxtanx)/sinx= cscx#?
• How do you verify #[sin^3(B) + cos^3(B)] / [sin(B) + cos(B)] = 1-sin(B)cos(B)#?
• How do you verify #[cot^2 x - tan^2 x)/[(cot x + tan x)^2] = 2(cos^2) x - 1#?
• How do you verify #(csc x+sec x)/(sin x+ cos x)=cot x+tan x#?
• How do you verify #secx-cosx=sinx/cotx#?
• How do you verify #(1-sin^2Ѳ)(1+cot^2Ѳ)=cot^2Ѳ#?
• How do you verify #1-cos(2x)*sec^2(x) = (tan(x))^2#?
• How do you verify #(cscx-1)/(1-sinx) =cscx#?
• How do you verify #cscx-sinx=cosxcotx#?
• How do you verify #(Cos2x)/(1-sin2x)=(1+tanx)/(1-tanx)#?
• How do you verify #sin 2x = (2 tan x)/(1+ tan² x)#?
• How do you verify #sec(x)-cos(x)=sin(x)tan(x)#?
• How do you verify #(tanθ – sinθ • cosθ) / (sin²θ) = tanθ#?
• How do you verify #(sin^3x+cos^3x)/(sinx+cosx)=1-sinxcosx#?
• How do you verify #tan(x)sin(x) + cos(x)= sec(x) #?
• How do you verify #tan(x) / (1-cos(x))= csc(x)(1+sec(x))#?
• How do you verify # sin(-x)sec(-x)=-tan(x)#?
• How do you verify #sinxtanx + cosx = secx#?
• Prove that #(1-2sin^2x)/(1+sin2x) = (1-tanx)/(1+tanx)#?
• Question #7218e
• How do you simplify #(sin x + cos x)^2 + (sin x – cos x )^2#?
• How do you prove # (cos(x/2)-sin(x/2))^2= 1-sinx#?
• How do you prove #sin^4 X = (cos^2 2X - 2 cos 2x + 1) / 4#?
• How do you prove #cot (x/2) = (1+cos x)/ sin x#?
• How do you prove #sin^2 theta-cos^2 theta=2sin^2 theta-1#?
• How do you prove #Sec^2 (theta) / (1 + tan^2 (theta) )= 1#?
• How do you verify #(1+sin theta)(1- sin theta) = cos^2 theta#?
• How do you verify # (sin(theta)+cos(theta))^(2) + (sin(theta)-cos(theta))^(2)=2#?
• How do you prove #1/(1+sin(theta)) + 1/(1-sin(theta)) = 2sec^2(theta)#?
• How do you prove #(1+sin theta)(1- sin theta) = cos^2 theta#?
• How do you prove #(1-cosx) /sin = sin/( 1+cosx)#?
• How do you prove # 1 / (1-sin^2 x) =1+tan^2 x#?
• How do you prove #(sec(theta))+(tan(theta))(1-sin(theta))=cos(theta)#?
• How do you simplify #Tan(sin^-1(3/5))#?
• How do you prove #(1 - sin x)/(1 + sin x)=(sec x + tan x)^2#?
• Question #cab60
• Question #831dc
• How do you prove #Tan^2(x/2+Pi/4)=(1+sinx)/(1-sinx)#?
• How do you verify #sec^2((pi/2)-x)-1=cot^2 x#?
• How do you verify #sin x csc (pi/2 - x)= tan x#?
• How do you verify #sec^2 x - cot^2 ( pi/2-x) =1#?
• How do you verify #csc (-x) / sec ( - x) =- cot x#?
• How do you verify #Sin[(3pi/2)+theta]= -cos(theta)#?
• How do you prove #1+ sin(x)= 2*cos^2 (pi/4- x/2)#?
• How do you prove # (cos[theta]+tan[theta])/(sin[theta])= sec[theta]+cot[theta]#?
• How do you prove #csc^4[theta]-cot^4[theta]=2csc^2-1#?
• How do you prove #(cos[theta]+cot[theta])/(csc[theta]+1)= cos[theta]#?
• How do you prove #(1+sec[theta])/(tan[theta]+sin[theta])= csc[theta]#?
• How do you prove #(2-sec^2[theta])/(sec^2[theta]) =1-2sin^2[theta]#?
• How do you prove #csc^2x-1=(csc^2x)(cos^2x)#?
• How do you prove #1+(Cosθ + Sinθ)(Cosθ-Sinθ)= 2/sec^2 θ#?
• How do you prove #csc^2 θ+ sec^2 θ = sec^2 θ csc^2 θ#?
• How do you prove #(1-csc^2t)/ csc^2t = -1/sec^2t#?
• How do you prove # sec^2(csc^2) = sec^2 + csc^2#?
• How do you prove #sin ø + cot ø cos ø = csc ø#?
• How do you prove #tan^2(x) / sec(x) = sec(x) - cos(x) #?
• How do you prove #(1-cos(x)) / sin(x) = csc(x) - cot(x) #?
• How do you simplify #(sin^4(x)-sin^2(x))/sec(x)#?
• How do you prove #sec^2(x)-tan^2(x)=1#?
• How do you prove #sec x + sin x = tan x sin x#?
• How do you prove #cos^4x - sin^4x = 1 - 2sin^2x#?
• How do you prove #Sec(2x)=sec^2x/(2-sec^2x)#?
• How do you prove #Sec(x) - cos(x) = sin(x) * tan(x)#?
• How do you prove #(Cot(x) - tan(x)) /( sin(x) cos(x)) = csc^2(x) - sec^2(x)#?
• How do you prove # tan(x) /( 1+tan(x)) = sin(x) /( sin(x)+cos(x))#?
• How do you prove #Csc(x) - Cos(x)Cot(x) = Sin(x)#?
• How do you prove #(sec^2 x-1)/sec^2x=sin^2x#?
• How do you prove #sec(2x)= ((secx)^2)/(2-(secx)^2)#?
• How do you prove #sec x/cos x - sec x cos x= tan^2 x #?
• How do you prove #sin x/(1-sin^2 x)=sec x tan x #?
• How do you prove #sec^2x / tanx = secxcscx #?
• How do you prove #cosxcotx = cscx - sinx#?
• How do you prove #csc^2(x)-cot^2(x)=1#?
• How do you prove #csc^2(theta)(1-cos^2(theta)=1#?
• How do you prove #tan(theta)/cot(theta)=tan^2(theta)#?
• How do you prove #(csc(t) + cot(t)(csc(t) - cot(t)) = 1#?
• How do you prove # {(sin(x + y)) / sin(x)cos(y)} = 1-cot(x)tan(y)#?
• How do you prove # cos^4(x) - sin^4(x) = cos(2x)#?
• How do you prove # cos(x+y)cosy + sin(x+y)siny = cosx#?
• How do you prove #sin(x+[pi/6])*sin(x-[pi/6]) = (sin x)^2 - 1/4#?
• Question #c0cfc
• Question #b79f5
• Question #7bc7e
• Question #3a473
• Question #4ae15
• Question #32396
• Question #0dd27
• Question #e41b6
• Question #cea51
• Simplify #(cscxcosx)/(tanx+cotx)#?
• Question #50e6d
• Question #d4c2f
• What is the simplified version of #(2 - 2tanx)/(2 + 2tanx)#?
• Question #200ab
• How would you prove or disprove #cotx - cosx/cotx = cos^2x/(1 + sinx)#?
• From #cosh2A = 1+2(sinh^2)A#, how do you prove that #(sinh^4)A + (cosh^4)A=(cosh4A + 3)/4# and also #(cosh^4)A - (sinh^4)A = cosh2A#?
• How do you show #(coshx + sinhx)^n = cosh(nx) + sinh(nx)# for any real number n?
• How do you prove #Cosh(A+B) = CoshA*CoshB+SinhB*SinhA#?
• How do you prove #sinhx +coshx=e^x#?
• How do you prove #cosh(2x) = cosh²x + sinh²x#?
• How do you prove #sinh^-1 (t) = ln(t+ sqrt(t^2 + 1))#?
• How do you prove #Arc cosh(x) = ln(x + (x^2 - 1)^(1/2))#?
• How do you solve #3 coth x + cosech ^2 x = 3#?
• How do you verify #tanh x/(cosh x - sinh x tanh x) = sinh x#?
• How do you verify #tanh(x + y) = (tanh x + tanh y)/(1 + tanh x + tanh y)#?
• Prove that #(cotx-tanx)/(sinx+cosx)=cscx-secx#?
• Question #f61d0
• Question #0430b
• How would you prove #tanx/cscx = secx - 1/secx#?
• Question #b092d
• Question #696f9
• How do you verify #Cos(180° - theta) = -cos theta#?
• How do you prove #((1+tanx)/(1-tanx)) + ((1+cotx)/(1-cotx)) = 0#?
• How do you prove#((cosx)/(1-tanx)) (sinx/(1- cotx))=sinx cosx#?
• How do you prove#tanx/(1+cosx) + sinx/(1-cosx)=cotx+(secx)(cscx)#?
• How do you prove #cosX / (secX - tanX) = 1 + sinX#?
• How do you prove #(tan^3x - 1) /( tanx - 1) = tan^2x + tanx + 1#?
• How do you prove #tan((x/2)+(pi/4))=secx+tanx#?
• How do you prove# (cosx)(cscx)(tanx)=1#?
• How do you prove# (cosx)(cscx)(tanx)=1#?
• How do you prove #(cotx-1)/(cotx+1) = (1-tanx)/(1+tanx)#?
• How do you prove #(1+tanx)/(1+cotx)=2#?
• How do you prove #(cotx)/(1-tanx)+(tanx)/(1-cotx) = 1+tanx+cotx#?
• How do you prove #(1+tanx)/(1+cotx) = tanx#?
• How do you prove #Tan[x+(pi/4)]=(1+tanx)/(1-tanx)#?
• How do you prove #sin2x=(tanx)(1+cos2x)#?
• How do you prove #(1+tanx) /( 1-tanx) = (1+sin2x) / cos"2x"#?
• How do you prove #(1+tanx)/(1+cotx)= secx/cscx#?
• How do you prove # 1/(secx-tanx) - 1/(secx+tanx)=2tanx#?
• How do you prove #(cosx-1)(tanx-1)=0#?
• How do you prove #[1 - cos(x)]/[sin(x)] = tan(x/2)#?
• How do you prove #{cos(x)cot(x)}/{1-sin(x)} - 1 = csc(x)#?
• How do you prove #Sin(x/3)cos(x/3) = (1/2)sin(2x/3)#?
• How do you prove #cos(x+y)cos(x-y)= cos^2x - sin^2y#?
• How do you prove #[sin(x+ y) - sin(x-y)] /[ cos(x+ y) + cos(x-y)]= tan y#?
• How do you prove #Sin^2x-sin^2y=sin(x+y)sin(x-y)#?
• How do you prove #Sin(x-y) Cos y + Cos(x-y) Sin y = Sinx#?
• How do you prove #Sec(x) - cos(x) = sin(x) * tan(x)#?
• How do you prove #sin (x + y + z) = sin x cos y cos z + cos x sin y cos z + cos x cos y sin z - sin x sin y sin z#?
• How do you prove # [sin(x+y) / sin(x-y)] = [(tan(x) + tan (y) )/ (tan (x) - tan (y))]#?
• How do you verify #cos (x-y) - cos (x+y) = 2 sin x sin y#?
• How do you prove # Cos θ Sec θ = 1 #?
• How do you verify #(1-sin)/(1+sin) = (sec-tan)^2#?
• How do you simplify #(sec^2x) - (tan^2x)#?
• How do you prove #(sec+tan)(sec-tan)=1#?
• How do you verify #(sec - tan) (csc +1)=cot#?
• How do you verify #((sec x - tan x)^2 + 1)/((sec x csc x) - (tan x csc x)) = 2tan x#?
• How do you verify #Sec(x) - cos(x) = sin(x) * tan(x)#?
• How do you verify #(sec + tan)(sec - tan) = 1#?
• How do you verify #Sec^4x-tan^4x=sec^2x+tan^2x#?
• How do you verify #Tan(theta)csc(theta)= sec(theta)#?
• How do you prove #cot(theta)sec(theta)=csc(theta)#?
• Question #25635
• Question #0a813
• Question #2bbce
• If #tanx=-12/5#, find #((cosx-1)(cosx+1))/((sinx-1)(sinx+1))#?
• How do you verify #(1-cos^2a)(1+cos^2a)=2sin^2a-sin^4a#?
• How do you verify #(sec theta+csc theta)(cos theta-sin theta)=cot theta-tan theta#?
• Question #91a43
• Question #a3e64
• Given #secalpha=secbetasecgamma+tanbetatangamma# How will you show? #secbeta =secgammasecalpha+-tangammatanalpha#
• How do you prove #tan2x + sec2x = (cosx + sinx) / (cosx – sinx)#?
• How do you prove #2sin x + sin 2 x = (2 sin^3 x) / (1 – cos x)#?
• How do you prove #[(sin 3x) / sin x ] – [(cos3x) / cos x)] = 2#?
• How do you prove #sin 4 x = 4 sin x cos x – 8sin^3 x cos x#?
• How do you prove #Cot^2 (theta) + 5 = 6 Cot (theta)#?
• How do you verify #sin^5xcos^2x=(cos^2x-2cos^4x+cos^6x)sinx#?
• How do you verify #sqrt((1-sinx)/(1+sinx))=(1-sinx)/abs(cosx)#?
• How do you prove #cos²θ - sin²θ = 2cos²θ - 1#?
• How do you prove #(1 + cot²θ) / secθ = cscθcotθ#?
• How do you solve #Cos x / (1- sin x) = sec x + tan x#?
• How do you prove #sin x + cos x * cot x = csc x#?
• How do you prove #(1 + csc x)(sec x - tan x) = cot x#?
• How do you prove #Sec(x) - cos(x) = sin(x) * tan(x)#?
• How do you prove # [1 - cos(x)]/[sin(x)] = tan(x/2)#?
• How do you prove #Cos(x+pi/6)-sin(x+pi/6)#?
• How do you prove #cos2t=(1-tan^2 t)/(1+tan^2 t)#?
• How do you prove #1+tan^2 (x) = sec^2 (x)#?
• How do you prove #sec(x) + 1 + ((1-tan^2(x)) / (sec(x)-1)) = cos(x)/(1-cos(x))#?
• How do you simplify #(tan^2 (theta) csc^2 (theta)-1) / tan^2(theta)#?
• How do you simplify #cos x /( sec x -1) + cos x / (sec x +1)#?
• How do you simplify #(1- tan^2θ) /( 1+ tan^2 θ)#?
• How do you verify #(tan^3(x) - 1) / (tan(x) - 1) = sec^2(x) + tan(x)#?
• How do you verify #(1+tan^2x)/(1+cot^2x) = (tan^2x)^2#?
• How do you verify #(2 + cos^2 x)(1+ tan^2 x)= 3 + 2tan^2 x#?
• How do you verify #(1 + sec^2 x) / (1 + tan^2 x) = 1 + cos^2 x#?
• How do you verify #(1-tan^2x) / (1+tan^2x) = 1-2sin^2#?
• How do you verify #(1-tan^2x)/(1-cot^2x) = 1-sec^2x#?
• How do you verify #(2tan(x/2)) / (1+tan^2(x/2)) = sin x#?
• How do you prove #(2tanx)/ (1+tan^2 x) = sin 2x#?
• How do you prove #[(1+tan^(2)x )/ (tan^(2)x)]=csc^(2)x#?
• How do you write #cos^2 0.45-sin^2 0.45# as a single trigonometric function?
• Question #e375a
• Question #4eece
• How do you verify the following identity?
• How do you verify the following identity?
• What is the value of #cot(-315^@)#?
• If #tan(a+b)=1 and tan(a-b)=1/7# then how will you find out the values of #tana and tanb#?
• Given #secalpha=secbetasecgamma+tanbetatangamma# How will you show? #secbeta =secgammasecalpha+-tangammatanalpha#
• Question #c28de
• Question #8e0f7
• Question #ba262
• Question #01baa
• Question #9a76f
• Question #b0253
• Prove the trigonometric identity? #tanx(1-cot^2x)+cotx(1-tan^2x)=0#
• Question #3394e
• How do you prove #secx-cosx=secxsinx#?
• Question #4d51c
• Question #ea647
• #cosx(2sinx + sqrt3)(-sqrt2 cosx + 1) = 0#??
• Question #5a859
• Question #62402
• Question #cc719
• Question #8908d
• Question #e1c7e
• Question #58cc8
• Question #e8ab5
• Question #f0808
• Question #d302a
• Question #bb27f
• Verify: #(cotx - cscx)(cosx +1) =-sinx# ?
• Question #41efc
• Question #edfc6
• Question #edfdd
• Question #bf732
• How do you find A, B and C, given that #A sin ( B x + C ) = cos ( cos^(-1) sin x + sin^(-1) cos x ) + sin (cos^(-1) sin x + sin^(-1) cos x )#?
• How do you verify the identity #(sec^2x-1)cos^2x=sin^2x#?
• How do you verify the identity #tanthetacsc^2theta-tantheta=cottheta#?
• How do you verify the identity #sec^2theta(1-cos^2theta)=tan^2theta#?
• How do you verify the identity #sectheta/sintheta-sintheta/costheta=cottheta#?
• How do you verify the identity #sintheta-sinthetacos^2theta=sin^3theta#?
• How do you verify the identity #csctheta-cotthetacottheta=sintheta#?
• How do you verify the identity #cot^2thetacsc^2theta-cot^2theta=cot^4theta#?
• How do you verify the identity #sintheta/(1-costheta)+(1-costheta)/sintheta=2csctheta#?
• How do you verify the identity #costheta/(1+sintheta)+tantheta=sectheta#?
• How do you verify the identity #1/(csctheta+1)+1/(csctheta-1)=2sec^2thetasintheta#?
• How do you verify the identity #sintheta/(1-cottheta)+costheta/(1-tantheta)=sintheta+costheta#?
• How do you verify the identity #1/(1-tan^2theta)+1/(1-cot^2theta)=1#?
• How do you verify the identity #(csctheta-cottheta)(csctheta+cottheta)=1#?
• How do you verify the identity #cos^4theta-sin^4theta=cos^2theta-sin^2theta#?
• How do you verify the identity #1/(1-sintheta)+1/(1+sintheta)=2sec^2theta#?
• How do you verify the identity #costheta/(1+sintheta)+costheta/(1-sintheta)=2sectheta#?
• How do you verify the identity #csc^4theta-cot^4theta=2cot^2theta+1#?
• How do you verify the identity #(csc^2theta+2csctheta-3)/(csc^2theta-1)=(csctheta+3)/(csctheta+1)#?
• How do you verify the identity #(csctheta-cottheta)^2=(1-costheta)/(1+costheta)#?
• How do you verify the identity #(1+tan^2theta)/(1-tan^2theta)=1/(2cos^2theta-1)#?
• How do you verify the identity #sectheta-costheta=tanthetasintheta#?
• How do you verify the identity #1-tan^4theta=2sec^2theta-sec^4theta#?
• How do you verify the identity #(1+tantheta)/(sintheta+costheta)=sectheta#?
• How do you verify the identity #(2+cscthetasectheta)/(cscthetasectheta)=(sintheta+costheta)^2#?
• How do you verify the identity #(cot^2x-1)/(1+cot^2x)=1-2sin^2x#?
• How do you verify the identity #(tanx-secx)/(tanx+secx)=(tan^2x-1)/(sec^2x)#?
• How do you verify the identity #(cos^2theta-sin^2theta)=(cottheta-tantheta)/(tantheta+cottheta)#?
• How do you verify the identity #sqrt((sinthetatantheta)/sectheta)=abs(sintheta)#?
• How do you verify the identity #sqrt((sectheta-1)/(sectheta+1))=abs((sectheta-1)/tantheta)#?
• How do you verify the identity #lnabs(csctheta+cottheta)+lnabs(csctheta-cottheta)=0#?
• How do you verify the identity #lnabs(cotx)+lnabs(tanxcosx)=lnabs(cosx)#?
• How do you verify the identity #sec^2theta+tan^2theta=sec^4theta-tan^4theta#?
• How do you verify the identity #-2cos^2theta=sin^4theta-cos^4theta-1#?
• How do you verify the identity #sec^2thetasin^2theta=sec^4theta-(tan^4theta+sec^2theta)#?
• How do you verify the identity #3sec^2thetatan^2theta+1=sec^6theta-tan^6theta#?
• How do you verify the identity #sec^4theta=1+2tan^2theta+tan^4theta#?
• How do you verify the identity #sec^2thetacsc^2theta=sec^2theta+csc^2theta#?
• How do you verify the identity #secx-cos^2xcscx=tanxsecx#?
• How do you verify the identity #(tanx+secx)(1-sinx)=cosx#?
• How do you verify the identify #sinthetasecthetacottheta=1#?
• How do you verify the identify #sintheta/csctheta=sin^2theta#?
• How do you verify the identify #sinthetatantheta+costheta=sectheta#?
• How do you verify the identify #tan^2theta+1=sec^2theta#?
• How do you verify the identify #sectheta/csctheta=tantheta#?
• How do you verify the identify #sec^2theta-tan^2theta=1#?
• How do you verify the identify #(sintheta+costheta)/sintheta=1+cottheta#?
• How do you verify the identify #cotthetasectheta=csctheta#?
• How do you verify the identify #costhetacscthetatantheta=1#?
• How do you verify the identify #csctheta/cottheta=sectheta#?
• How do you verify the identify #tantheta+cottheta=secthetacsctheta#?
• How do you verify the identify #costhetacottheta+sintheta=csctheta#?
• How do you verify the identify #secthetacottheta=csctheta#?
• How do you verify the identify #sectheta=cscthetatantheta#?
• How do you verify the identify #(1-sintheta)(1+sintheta)=cos^2theta#?
• Question #14061
• Question #14663
• Question #de16d
• Question #ac5ff
• Question #5176d
• How do you prove #(1+costheta)/sintheta+sintheta/costheta=(costheta+1)/(sinthetacostheta)#?
• How do you prove #(1-cosx)/sinx=sinx/(1+cosx)#?
• How do you prove #(1+tany)/(1+coty)=secy/cscy#?
• How do you prove #(sinx+cosx)/(secx+cscx)=sinx/secx#?
• How do you prove #(cos^2alpha+cotalpha)/(cos^2alpha-cotalpha)=(cos^2alphatanalpha+1)/(cos^2alphatanalpha-1)#?
• How do you prove #sec2theta=sec^2theta/(2-sec^2theta)#?
• How do you prove #(2tantheta)/(1+tan^2theta)=sin2theta#?
• How do you prove #cos(u-v)/(cosusinv)=tanu+cotv#?
• How do you prove #1-cos5thetacos3theta-sin5thetasin3theta=2sin^2theta#?
• How do you prove #2sinthetacos^3theta+2sin^3thetacostheta=sin2theta#?
• How do you prove #(tan3t-tant)/(1+tan3t*tant)=(2tant)/(1-tan^2t)#?
• How do you prove #(tanx-sinx)/(2tanx)=sin^2(x/2)#?
• How do you prove #(cos^3beta-sin^3beta)/(cosbeta-sinbeta)=(2+sin2beta)/2#?
• How do you prove #sin(alpha+beta)sin(alpha-beta)=sin^2alpha-sin^2beta#?
• How do you prove #cos^2x(1-sec^2x)=-sin^2x#?
• How do you prove #tantheta(tantheta+cottheta)=sec^2theta#?
• How do you prove #(1+cos^2x)/sin^2x=2csc^2x-1#?
• How do you prove #(tany+coty)/cscy=secy#?
• How do you prove #(1+sinx)/(1-sinx)+(sinx-1)/(1+sinx)#?
• How do you prove #tantheta-cottheta=(sectheta-csctheta)(sintheta+costheta)#?
• How do you prove #cos^2alphacot^2alpha=cot^2alpha-cos^2alpha#?
• How do you prove #(tanx+cotx)/(secx+cscx)=1/(cosx+sinx)#?
• How do you prove #2sin^2thetacos^2theta+cos^4theta=1-sin^4theta#?
• How do you prove #cottheta/(csctheta-1)=(csctheta+1)/cottheta#?
• How do you prove #(1+sinx)/(1-sinx)=(secx+tanx)^2#?
• How do you find the exact value of #sin^-1(-sqrt3/2)#?
• How do you prove the identity #(tany+siny)/(2tantheta)=cos^2(y/2)#?
• How do you prove the identity #(sinx-cosx)/cos^2x=(tan^2x-1)/(sinx+cosx)#?
• Question #2f091
• How do you simplify #cot x xx sin x#?
• #sin(cos^-1(4/sqrt(p^2+16))) =# ?
• Question #cf9c7
• If #sinx+siny=a# and #cosx+cosy=b# how do you find #cos(x-y)# ?
• If #sinx+siny=a# and #cosx+cosy=b# how do you find #x,y# ?
• Question #84512
• Simplify #(1+cos2A+sin2A)/(1-cos2A+sin2A)#?
• Question #74b80
• Question #bf293
• Question #8f7b6
• Question #b79c3
• Question #ff82b
• Question #bb1b9
• Prove that #cosB/(1-sinB)=secB+tanB#?
• If #2cosAcosB=cos(x)+cos(y)#, then #x+y=#??
• Question #9edc7
• Prove that #(cosA - sinA + 1)/(cosA + sinA - 1) = cscA + cotA# ?
• Question #cfd49
• PROVE THAT : [sinA /1-cosA - 1-cosA/sinA ][cosA/1+sinA + 1+sinA/cosA] = 4cosecA.?
• Question #6ad0a
• #(sin x)^4 / x + (cos x )^4 /y = 1/(x+y)# Then prove that #(sin x)^12 /x^5 + (cos x)^12 /y^5 = 1/(x+y)^5# ?
• Question #5f6db
• Question #5743e
• Question #ccc87
• If tanx =3/4, π < x <3 π /2, find the values of sin (x/2), cos (x/2) and tan (x/2)?
• Question #07cd9
• Question #7cfc8
• Solve #cosx+sinx=2/3# ?
• Question #d8d7c
• How do you prove #costhetatantheta=sintheta#?
• How do you prove #costhetacottheta=costheta#?
• How do you prove #tantheta/cottheta=tan^2theta#?
• How do you prove #csctheta/sintheta=csc^2theta#?
• How do you prove #cos^2theta/(1+sintheta)=1-sintheta#?
• How do you prove #(1-2cos^2theta)/(sinthetacostheta)=tantheta-cottheta#?
• How do you prove #sin^4theta-cos^4theta=sin^2theta-cos^2theta#?
• How do you prove #cos^4theta-sin^4theta=1-2sin^2theta#?
• How do you prove #(1-tantheta)/(1+tantheta)=(cottheta-1)/(cottheta+1)#?
• How do you prove #sin^2theta/(1-sin^2theta)=tan^2theta#?
• How do you prove #(1-tan^2theta)/(1-cot^2theta)=1-sec^2theta#?
• How do you prove #sintheta=+-tantheta/(sqrt(1+tan^2theta))#?
• How do you prove #cos3theta=4cos^3theta-3costheta#?
• How do you prove #tan(1/2theta)=csctheta-cottheta#?
• How do you prove #sin(2theta)/sintheta-cos(2theta)/costheta=sectheta#?
• How do you prove #sin(3theta)/sintheta-cos(3theta)/costheta=2#?
• How do you prove #tan(2theta)=2/(cottheta-tantheta)#?
• How do you prove #tan(3theta)=(3tantheta-tan^3theta)/(1-3tan^2theta)#?
• How do you prove #tan^2(1/2theta)=(tantheta-sintheta)/(tantheta+sintheta)#?
• How do you prove #cos^2phi/cos^2theta=(1+cos2phi)/(1+cos2theta)#?
• How do you prove #sin^-1x+cos^-1x=pi/2#?
• How do you prove #sec^-1x+csc^-1x=pi/2#?
• How do you prove #sin^-1(-x)=-sin^-1x#?
• How do you prove #cos^-1(-x)+cos^-1x=pi#?
• How do you prove #cot^-1x=tan^-1(1/x)# for x>0?
• How do you prove #tan^-1x+tan^-1(1/x)=pi/2# for x>0?
• How do you prove #tan^-1(1/3)+tan^-1(1/5)=tan^-1(4/7)#?
• How do you prove #tan^-1(1/4)+tan^-1(2/9)=tan^-1(1/2)#?
• Question #cdf91
• Prove that #secx-cosx=tanxsinx#?
• Question #c070f
• Question #93fd2
• Question #a0e09
• Question #6cb94
• Prove that #cos(4x)=8 cos(x)^4 - 8 cos(x)^2 +1# ?
• Question #fe77f
• Prove that #(1+sinx)/(1-sinx)=(secx+tanx)^2#?
• Question #9d32e
• Question #1892c
• Question #c781d
• Question #9240c
• Question #b851d
• Solve tanx=cotx for all solutions [0, 2pi)?
• Question #d75d1
• Question #f83fd
• Question #0733f
• Question #849cc
• Question #f676d
• Question #27270
• Question #fa8db
• Question #11eef
• Question #54631
• How do you show that #cosx/(1 - tanx) - sin^2x/(cosx- sinx) = cosx + sinx#?
• How do you prove that #sin5x=sinx(cos^2 2x-sin^2 2x)+2cosxcos2xsin2x#?
• Provet that? : #cos(-x) -= cosx#
• Pruebalo #(sinx-cosx)^2=1-1/csc^2x#?
• Question #01154
• Pruebalo #sin2x=2sinxcosx#?
• Question #5d455
• Question #0d7b8
• Question #c38f4
• How do you verify that #sin^2x/(cos^4x+cos^2xsin^2x)=tan^2x#?
• Question #4d249
• Question #23e00
• Prove that #sin^2 theta(1+cot^2 theta)-1=0#?
• Question #634e2
• Question #75f4f
• Question #3a93f
• Question #aadaa
• Question #297e2
• Question #4c437
• Question #b8b69
• How do you prove that #sin(cot^(-1)(tan(cos^(-1)(sin x))))=sin x#?
• Verify that (cos^2x - sin^2x) / (1-tan^2x) = cos^2x ?
• How do you show that #cos(2x) = 2cos^2x- 1#?
• Question #13d24
• How do you show that the equation #1-sinx=cosx# is not an identity?
• How do you prove #tan(-A)=-tanA#?
• How do you prove that #sintheta+costheta=tantheta# is not an identity?
• How do you prove that #sec^2x+csc^2x=1# is not an identity?
• How do you verify #cosx=cotx/cscx#?
• How do you verify #1/(tanx+secx)=cosx/(sinx+1)#?
• How do you verify #csctheta-cottheta=1/(csctheta+cottheta)#?
• How do you verify #sinthetatantheta=sectheta-costheta#?
• How do you verify #(sinA-cosA)^2=1-2sin^2AcotA#?
• How do you find a numerical value of one trigonometric function of x given #tanx=1/4secx#?
• How do you find a numerical value of one trigonometric function of x given #cotx+sinx=-cosxcotx#?
• How do you verify #tanA=secA/cscA#?
• How do you verify #costheta=sinthetacottheta#?
• How do you verify #secx-tanx=(1-sinx)/cosx#?
• How do you verify #(1+tanx)/(sinx+cosx)=secx#?
• How do you verify #secxcscx=tanx+cotx#?
• How do you verify #sintheta+costheta=(2sin^2theta-1)/(sintheta-costheta)#?
• How do you verify #(sinA+cosA)^2=(2+secAcscA)/(secAcscA)#?
• How do you verify #(sintheta-1)(tantheta+sectheta)=-costheta#?
• How do you verify #cosy/(1-siny)=(1+siny)/cosy#?
• How do you verify #costhetacos(-theta)-sinthetasin(-theta)=1#?
• How do you verify #cscx-1=cot^2x/(cscx+1)#?
• How do you verify #cosBcotB=cscB-sinB#?
• How do you verify #sinthetacosthetatantheta+cos^2theta=1#?
• How do you verify #(cscx-cotx)^2=(1-cosx)/(1+cosx)#?
• How do you verify #sinx+cosx=cosx/(1-tanx)+sinx/(1-cotx)#?
• How do you find a numerical value of one trigonometric function of x given #cscx/cotx=sqrt2#?
• How do you find a numerical value of one trigonometric function of x given #(1+tanx)/(1+cotx)=2#?
• How do you find a numerical value of one trigonometric function of x given #1/cotx-secx/cscx=cosx#?
• How do you find a numerical value of one trigonometric function of x given #(1+cosx)/sinx+sinx/(1+cosx)=4#?
• How do you find a numerical value of one trigonometric function of x given #cos^2x+2sinx-2=0#?
• How do you find a numerical value of one trigonometric function of x given #cscx=sinxtanx+cosx#?
• How do you use the graphing calculator to determine whether the equation #1/sin^2x+1/cos^2x=1# could be an identity?
• How do you use the graphing calculator to determine whether the equation #costheta(costheta-sectheta)=-sin^2theta# could be an identity?
• How do you use the graphing calculator to determine whether the equation #2sinA+(1-sinA)^2=2-cos^2A# could be an identity?
• How do you use the graphing calculator to determine whether the equation #(sin^3x-cos^3x)/(sinx-cosx)=sin^2x+cos^2x# could be an identity?
• Question #93493
• How do you verify the identity #cosx+cosxtan^2x=secx#?
• How do you prove that #sinxtanx = secx- cosx#?
• Question #52b10
• #sinx+sin^2x+sin^3x#=1 the what is #cos^6x -4cos^4x+8cos^2x#=?
• Question #897a1
• Question #879e2
• How do you verify #cosxcotx+sinx=cscx#?
• How do you verify #sin(2pi-theta)=-sintheta#?
• How do you verify #(2cot2x)/(cosx-sinx)=cscx+secx#?
• How do you simplify #costheta/(sin^2theta-1)#?
• How do you prove that #costheta/(1-sintheta) + costheta/(1+sintheta) = 2 /costheta#?
• Question #70ca9
• Question #49284
• Question #7d3bd
• Question #cabf2
• How do you verify #costheta(1-4sin^2theta)=costhetacos(2theta)-sinthetasin(2theta)#?
• Question #1dfb0
• Question #4611d
• Question #ed504
• Question #75f9a
• Question #f3a89
• Prove that #sec^2x(1-cos^2x)=tan^2x#?
• Question #745b8
• Question #adcee
• Question #4d151
• Question #fc29b
• How do you show that #sec(2x) + tan(2x) + 1 = 2/(1 - tanx)#?
• Prove that #(tanx-cotx)/(tanx+cotx)=sin^2x-cos^2x#?
• Question #94009
• Prove that #cosycos(x-y)-sinysin(x-y)=cosx#?
• Question #32891
• Question #18ffc
• If #(a^2-b^2)sintheta + 2ab costheta = a^2+b^2#, then what will the value of #sintheta# be?
• Question #efcdc
• Question #1b8ac
• Question #5cf65
• Question #ac9e3
• Question #07ce3
• Verify? #(cotx-tanx)/cosxsinx=csc^2x-sec^2x#
• Question #56a1c
• Question #781b9
• Verify that each equation is an identity?
• How do you show that #(sec^2x + csc^2x)(sec^2x- csc^2x) =tan^2x -cot^2x#?
• Question #562b9
• Prove the identity of #cos(3x + 3y) + cos(3x − 3y) = 2 cos 3x cos 3y#?
• How do you verify #(1+cotalpha)^2-2cotalpha=1/((1-cosalpha)(1+cosalpha))#?
• Question #d1e3c
• Question #ddb15
• Question #01fe8
• Question #350e8
• How to prove these identities?
• Question #9f5e1
• Question #8de97
• Question #88774
• How do you show that #4cos^2x- 2 = 2sin(2x+ pi/2)#?
• Question #18ea9
• Question #6c534
• If #sectheta+tantheta=3/2#, what is the value of #sintheta#?
• Question #df763
• Question #aef15
• Question #c1e7d
• Question #04652
• If #sina + sin^2a = 1,# then what will be# cos^2a + cos^4a #?
• How can you show #tan^2 x(1+cos2x)=2sin^2x#?
• Question #9f4e8
• Question #fed78
• Question #78b54
• Question #ba55e
• Question #23ee5
• Question #df912
• Question #7d988
• Question #b70e4
• Question #fc331
• How do you prove the identity #(sin^3x - cos^3x)/(sinx - cosx) =1 + sinxcosx#?
• Question #26248
• Question #77e3a
• Question #8011d
• Question #a4b38
• Question #5df8b
• Question #71bbb
• Simplify #Sin[2tan^-1(sqrt((1-x)/(1+x)))]#?
• #If tan^4a + tan^2a = 1#, then find the value of #cos^4a + cos^2a ?#
• Question #5d572
• How to prove the value of cos a + sin a is greater than 1 ?
• How do you prove #csc^2theta-cot^2theta=cotthetatantheta#?
• Question #09530
• Prove? #cscx(1+cosx)(cscx-cotx)=1#
• Question #3ea95
• Question #6fd1b
• How do you verify the identity #sintcsct=1#?
• How do you verify the identity #secycosy=1#?
• How do you verify the identity #(1+sinalpha)(1-sinalpha)=cos^2alpha#?
• How do you verify the identity #cot^2y(sec^2y-1)=1#?
• How do you verify the identity #cos^2beta-sin^2beta=1-2sin^2beta#?
• How do you verify the identity #cos^2beta-sin^2beta=2cos^2beta-1#?
• How do you verify the identity #tan^2theta+4=sec^2theta+3#?
• How do you verify the identity #2-sec^2z=1-tan^2z#?
• How do you verify the identity #sin^2alpha-sin^4alpha=cos^2alpha-cos^4alpha#?
• How do you verify the identity #csc^2theta/cottheta=cscthetasectheta#?
• How do you verify the identity #cot^2t/csct=csct-sint#?
• How do you verify the identity #1/tanbeta+tanbeta=sec^2beta/tanbeta#?
• How do you verify the identity #sin^(1/2)xcosx-sin^(5/2)xcosx=cos^3xsqrtsinx#?
• How do you verify the identity #1/(secxtanx)=cscx-sinx#?
• How do you verify the identity #(sectheta-1)/(1-costheta)=sectheta#?
• How do you verify the identity #cotalpha+tanalpha=cscalphasecalpha#?
• How do you verify the identity #secx-cosx=sinxtanx#?
• How do you verify the identity #1/tanx+1/cotx=tanx+cotx#?
• How do you verify the identity #1/sinx-1/cscx=cscx-sinx#?
• How do you verify the identity #(costhetacottheta)/(1-sintheta)-1=csctheta#?
• How do you verify the identity #(1+sintheta)/costheta+costheta/(1+sintheta)=2sectheta#?
• How do you verify the identity #1/(sinx+1)+1/(cscx+1)=1#?
• How do you verify the identity #tan(pi/2-theta)tantheta=1#?
• How do you verify the identity #cos(pi/2-x)/sin(pi/2-x)=tanx#?
• How do you verify the identity #csc(-x)/sec(-x)=-cotx#?
• How do you verify the identity #(1+siny)(1+sin(-y))=cos^2y#?
• How do you verify the identity #(sinxcosy+cosxsiny)/(cosxcosy-sinxsiny)=(tanx+tany)/(1-tanxtany)#?
• How do you verify the identity #(tanx+tany)/(1-tanxtany)=(cotx+coty)/(cotxcoty-1)#?
• How do you verify the identity #(cosx-cosy)/(sinx+siny)+(sinx-siny)/(cosx+cosy)=0#?
• How do you verify the identity #sqrt((1+sintheta)/(1-sintheta))=(1+sintheta)/abscostheta#?
• How do you verify the identity #sqrt((1-costheta)/(1+costheta))=(1-costheta)/abssintheta#?
• How do you verify the identity #cos^2beta+cos^2(pi/2-beta)=1#?
• How do you verify the identity #sec^2y-cot^2(pi/2-y)=1#?
• How do you verify the identity #sintcsc(pi/2-t)=tant#?
• How do you verify the identity #sec^2(pi/2-x)-1=cot^2x#?
• How do you verify the identity #2sec^2x-2sec^2xsin^2x-sin^2x-cos^2x=1#?
• How do you verify the identity #cscx(cscx-sinx)+(sinx-cosx)/sinx+cotx=csc^2x#?
• How do you verify the identity #2+cos^2x-3cos^4x=sin^2x(3+2cos^2x)#?
• How do you verify the identity #tan^4x+tan^2x-3=sec^2x(4tan^2x-3)#?
• How do you verify the identity #csc^4x-2csc^2x+1=cot^4x#?
• How do you verify the identity #(sin^4beta-2sin^2beta+1)cosbeta=cos^5beta#?
• How do you verify the identity #sec^4theta-tan^4theta=1+2tan^2theta#?
• How do you verify the identity #csc^4theta-cot^4theta=2csc^2theta-1#?
• How do you verify the identity #cosx/(1-sinx)=(1-sinx)/cosx#?
• How do you verify the identity #cotalpha/(cscalpha+1)=(cscalpha-1)/cotalpha#?
• How do you verify the identity #(tan^3alpha-1)/(tanalpha-1)=tan^2alpha+tanalpha+1#?
• How do you verify the identity #(sin^3beta+cos^3beta)/(sinbeta+cosbeta)=1-sinbetacosbeta#?
• What is #(1+cosx)/(1+secx)# for #x=pi/3#?
• Question #16345
• Question #2a2fe
• Question #a0851
• Question #3a1ff
• Question #e7c45
• Question #a2c18
• Simplify #(1+cos2x)/(sin2x)#?
• Express #(1-sin^2x)/cosx# in terms of sine ratio of #x# and / or its multiples?
• Question #24c34
• Question #b542e
• Question #2abb6
• Does #2+2tanx=2secx#?
• Prove #cot^2theta/(sintheta+costheta)=(cos^2thetasintheta-cos^3theta)/(2sin^4theta-sin^2theta)#?
• Question #b99f6
• Question #375a5
• How do you prove that? Sin4x=4 cos2x sinx cosx
• How do you verify the identity #cosx(tan^2x+1)=secx#?
• How do you verify the identity #sec^2xcotx-cotx=tanx#?
• How do you verify the identity #cot(pi/2-x)=tanx#?
• How do you verify the identity #1/(tanthetacsctheta)=costheta#?
• How do you verify the identity #1/(tanxcscxsinx)=cotx#?
• Question #9925d
• Question #5df15
• Question #5a13e
• Simplify #[2(tanx-cotx)]/(tan^2x-cot^2x)#?
• Prove that #(sinx-1)/(sinx+1)=(-cos^2x)/(sinx+1)^2#?
• Question #2077e
• Prove that # 1200secx(2(sec^2x)-1) -= 1220 ((1+sin^2x)/cos^2x) #?
• Prove? #cotx/(cscx-1)=(cscx+1)/cotx#
• Question #18291
• Which of these is an identity?
• Question #f4c39
• Question #e51b8
• Question #603e4
• Question #49ba0
• Prove that #(1+cotx)/cscx-secx/(tanx+cotx)=cosx#?
• Question #a5232
• Question #75222
• Question #f48cc
• Question #db45b
• Question #7cb8c
• Question #8df79
• Question #abbeb
• If #cotx+coty+cotz=0#, prove that #(tanx+tany+tanz)^2=tan^2x+tan^2y+tan^2z#?
• Solve #acosA-bsinA=c# ?
• Question #7efd9
• Question #57b0f
• How do you verify sin2x * cotx = 1 ?
• Question #8982d
• Show that # sin^2x tan^2x = ( 3-4cos2x+cos4x ) / ( 4(1+cos2x) ) #?
• Question #7225a
• Question #c9664
• How can you prove that #1 - tanh^2x = sech^2x#?
• Question #7e96d
• Question #24c10
• Question #1bb35
• Question #9a883
• Question #49783
• Prove that #tanx-(sec^2x)/tanx=-cotx#?
• Question #df465
• Simplify? #1/2 (tantheta-cottheta)/(tantheta+cottheta+1)#
• Question #d2f6c
• If #tan^2theta=1-k^2#, then prove that #sectheta+tan^3thetacsctheta=(2-k^2)^(3/2)#?
• Question #36416
• Question #84869
• Question #32e1a
• Question #2f3f7
• How do you prove #sin^2x + cos^2x = 1#?
• Simplify #(cscx-sinx)/(sinxcscx)#?
• Question #08ca1
• Question #19476
• Question #2753c
• Question #0038f
• How can one prove that #ln(sec^2x+csc^2x) = ln(sec^2x)+ln(csc^2 x)#?
• How do you prove that #-2cosbeta(sin alpha - cosbeta) = (sin alpha - cosbeta)^2 + cos^2beta - sin^2alpha#?
• How do you prove that #9sec^2u - 5tan^2u = 5 + 4sec^2u#?
• Question #2e707
• Question #9667f
• Question #4d1cc
• Question #f5744
• Question #d17b0
• Question #17b3b
• How do you prove the identity #sec u - tan u = cos u/(1+sin u)# ?
• Question #348ea
• Question #6b326
• Question #45a11
• How do you prove the trig identity #(sinucosu)/(cos^2u-sin^2u)=tanu/(1-tan^2u)#?
• Question #ebba1
• Question #7d8c7
• How do you solve #cosx+ cos(3x) =0#?
• How do you show that #csctheta = (1+ sec theta)/(tan theta + sintheta)#?
• Question #24406
• Question #885b2
• #(1 + sec^2x) / (1 + tan^2x) = 1 + cos^2x# ?
• How do you prove #(sec x + tan x)(1 - sin x) = cos x# ?
• Question #8a5b0
• Question #69758
• Question #cf786
• Question #a9ac6
• Question #7987e
• Question #5990c
• Question #eabbb
• #(sinx-sinxcosx)/(sinx+sinxtanx)=(1-cosx)/(1+tanx)#?
• Question #63b1d
• Question #63bfa
• Question #1b893
• Question #422ca
• Question #969a8
• Question #56b16
• Question #5f3d6
• Question #7193d
• Prove that #(1-sinx)/secx=cos^3x/(1+sinx)#?
• Question #5abd9
• Question #71076
• Question #ba1cf
• Question #ed6c3
• Question #57b11
• Question #d1ec6
• Simplify #sinxcosxsecx#?
• Question #93c73
• Question #0571d
• Question #09574
• Question #eac46
• Question #cb109
• Question #26441
• Question #d800a
• Question #c2ed7
• Question #ad7d3
• Question #5060b
• Question #de3ed
• Question #0654f
• How to prove the following? #cot^(-1)7+cot^(-1)8+cot^(-1)18=cot^(-1)3#
• Question #7facb
• Question #1d35a
• Question #c21e2
• Question #cc4ce
• Question #6e55f
• Question #dec07
• Question #66d08
• Question #1cf76
• Question #68cf7
• How do you prove: #(4sin^2x)/(2sinx+1)=2sinx-1#?
• Question #c4d85
• Question #fbd74
• Question #23c32
• Question #d7b02
• Prove that #cos^2+tan^2cos^2x=1#?
• Question #1bd72
• How do you prove that #(secx + tanx)/(cosx + cotx) = sinxsec^2x#?
• Prove that: #((1+tanx)/sinx)+((1+cotx)/cosx)=2(secx+cosecx) #?
• Simplify #(cotxtanx)/sinx#?
• Question #1f5ff
• Proof cos(x+y) cos(x-y)= cos2x + cos2y - 1 ?
• Proof #cos(x+y) cos(x-y)= cos^2x + cos^2y - 1#?
• How do you show that #sintheta(cot theta + tantheta) = sec theta#?
• Question #58bec
• Question #a32b3
• Question #de713
• Problem (1) For what value of #x#, #sinx+cosx=2# Problem (2) For what value of #x#, #sinxcosx=1#?
• Question #246a9
• Question #5c3be
• Question #e17aa
• Question #0022e
• Question #f8eca
• Question #f5dd6
• Question #db1ea
• Question #62f68
• Question #1be0a
• Question #c12a4
• Sin⁴∅/x + Cos⁴∅/y=1/x+y then prove sin¹²∅/x to the power 5 + cos¹²∅/y to the power 5=1/(x+y) to the power 5?
• Question #aa2dc
• Simplify #(tan(theta-beta)+tanbeta)/(1-tan(theta-beta)tanbeta)#?
• Question #1e28e
• Question #d6ecb
• Question #ca93b
• Question #f96ba
• Prove this: #(1-sin^4x-cos^4x)/(1-sin^6x-cos^6x)=2/3#?
• Question #f1b58
• Prove it: #sqrt((1-cosx)/(1+cosx))+sqrt((1+cosx)/(1-cosx))=2/abs(sinx)#?
• Prove it: #tan^5x=((1/(1-sinx)^2)-(1/(1+sinx)^2))/((1/(1-cosx)^2)-(1/(1+cosx)^2)#?
• What is the difference between proving and solving when it comes to trigonometric identities?
• Question #18b64
• Question #9e76f
• Question #1cfd6
• Can you help me with this problem: #sinx+cosx=sinxcosx#? Please?
• Question #1381d
• Question #963f8
• Can anyone help me verify the following identity? cosx/(secx)(sinx)=cscx-sinx
• Question #ea44f
• Prove that #sec^2x/(sec^2x-1)=csc^2x#?
• Question #f4b07
• Question #47a87
• How do you prove that #1 - cos(5theta)cos(3theta) - sin(5theta)sin(3theta) = 2sin^2theta#?
• Question #081fa
• Question #e4ae3
• Question #8e102
• Question #b0f0b
• Prove that #cot^2x-cos^2x=cot^2xcos^2x#?
• Question #ac0e3
• Question #93741
• Question #0ca29
• Question #78f8a
• Question #923f4
• How do you prove that #1/2 sin^(-1) (4/5) = tan^(-1) (1/2)# ?
• Question #61ed8
• Prove that # sin^2x + sin^2xcot^2x -= 1# is an identity?
• Prove that #(tanx+tany)/(tanx-tany)=2cscx#?
• Can you prove #1- \cos ^ { 2} x = \sin x \cos x \tan x#?
• Question #50ca2
• Question #bca2e
• Question #05ce8
• Verify? #2cosx-secx=cosx-tanx/cscx#
• Question #30f23
• Question #0860e
• Question #49d56
• Question #8154d
• Question #89f3f
• Question #2712b
• Question #be269
• Question #1ae2e
• Question #e9930
• Question #b725f
• Question #ed919
• Question #a263e
• Question #cf8dc
• Question #4c761
• Question #ca9fe
• How do we prove that #(1 - tan theta)/(1 + tan theta) = (cot theta - 1)/(cot theta + 1)#?
• Question #3d5bd
• Question #95289
• Question #4e1e9
• Question #0e37b
• Question #c20a4
• Question #86fbc
• Question #f4659
• Question #bc7b6
• Prove that #secx-tanx=sqrt((1-sinx)/(1+sinx)#?
• Question #37bc4
• How do we simplify #(1 - tanx)/(1 - cotx)#?
• Question #da28a
• Question #0e194
• Question #0ac31
• Question #71ebe
• Question #6aefa
• Question #04cb2
• Question #5bf52
• Question #54fdd
• Prove that #(cscx)/(1+cscx)-(cscx)/(1-cscx)=2sec^2x#?
• Question #4d95b
• How do you prove that #(cos(2x) + sin^2x)/cosx = cosx#?
• Question #659d8
• Question #2fe56
• Question #5c457
• Question #f15cd
• Question #360f2
• How do we show that #(sinx - cosx)/sinx + (cosx -sinx)/cosx = 2 - secxcscx#?
• Question #f2ee0
• Question #d5338
• Question #4e767
• Question #40bb3
• Question #52cf0
• How do you show that #(cscx - cotx)^2 = (1 - cosx)/(1 + cosx)#?
• What is #sin^2 3x+cos^2 3x#?
• Question #84c50
• How do you show that #1 + tan^2x = sec^2x#?
• Question #def7c
• Question #28f4a
• Question #6b048
• Question #8bd05
• Question #f1f92
• Prove that # cos A / (1- tan A) + sin A / (1- cot A) -= cos A + sin A #?
• Question #011db
• How do you prove that #(1 + tan^2x)/(1 + cot^2x) = ((1 - tanx)/(1 - cotx))^2#?
• Show that? : # tan(arcsinx) = x/sqrt(1 -x^2) #
• Prove that # (sinx)^(sqrt(2)) =tan x #?
• Simplify the expression # secx/tanx #?
• Simplify #sintheta(csctheta+sinthetasec^2theta)#?
• How do I prove that #(tanx-sinx)/(tanxsinx)=(1-cosx)/sinx#?
• Question #6319b
• If #y=(sinx-cosx)/(sinx+cosx)#, then find the value of #1+y^2#?
• Question #3acab
• How do I evaluate #cos48cos12#?
• How do I prove that #cscx-sinx=cosxcotx#?
• Question #588d8
• Question #8f91f
• Tan(x+pi/4)=1+2sinx cosx/1-2sin^2 x prove?
• Question #4d676
• if #sinx+cosx=a# find #sin^3(x)+cos^3(x)# in terms of #a#?
• Question #d6553
• Prove that # 1/(csctheta+1) + 1/(csctheta-1) -= 2sec theta \ tan theta #?
• Question #c528c
• Question #fda82
• Prove that? : # arcsin ( (x-1)/(x+1) ) = 2arctan sqrt(x) - pi/2 #
• Simplify # cot(-x) sinx #?
• Simplify # cot theta - tan theta #?
• How do you verify the identity (1-sin(X))/cos (X) = cos (X)/ (1 + sin (X)? Thank you!
• Prove? #secx/sinx-cscx/secx=tanx#
• How do I prove that #2 sin ((C+D)/2) cos ((C-D)/2) = sin C+sin D#?
• How do I prove #(sec x/cos x)+(csc x/sin x)=4 csc^2(2x)#?
• Question #c9323
• How do i prove that #csc 2x+cot 2x=cot x#?
• Question #3e1fb
• Question #65a17
• Question #c02dc
• If #sin2A+sin4A=1# then prove that #tan^2A-tan^4A=1#?
• Question #d325d
• Question #d2d69
• How do you prove #1-4sin^4(x)=cos(2x)(1+2(sin^2)x)# ?
• Question #132a1
• Simplify #cosx+sinx/cotx#?
• Prove that #sinA/(1-cosA) + cosA/(1-tanA) -= sinA+cosA#?
• Is #tan^2x -= sec^2x - 1# an identity?
• Prove that #(cosx+secx)^2 -= sec^2x+2+ cos^2x#?
• Are the following equations or identities?
• Prove the trig identity?
• Solve the equation #(1+sinx)/(1-sinx)=2sec^2x+2secxtanx-1#?
• How do you establish the identity for the following trigonometric equation?
• Prove #cos(x)+sin(x)tan(x)=sec(x)#?
• Show that? # (1-tan^2x)/(1+tan^2x) = cos^2-sin^2x #
• Question #2ab1a
• How do you verify the identity below?
• Prove that # (1-tan^2 theta) / (1+tan^2 theta) -= cos(2 theta) #?
• Prove that? # (cos^4 x - sin^4 x)/(1-tan x) -= cos^2 x +sin x cos x #
• Prove that # (sin4t)/4 -= cos^3tsint-sin^3tcost #?
• Prove that # sqrt((1-cosx)/(1+cosx)) -= (1-cosx)/(|sinx|) # ?
• Question #ba02a
• #1-2sina*cosa÷2=sin^2(45^@-a)#?
• How to establish this identity?
• Verify the Identity? Sinx / 1-cos^2x = cscx
• How do you prove: #("cosec"(x - B))/ sec(x + B) = (1 - tan x tan B) / (tan x - tan B)# ?
• Prove the identity? sin((pi/(6))+x)=(1)/(2)(cos x +sqrt(3sinx)))
• Prove that #Cos^6(x)+sin^6(x)=1/8(5+3cos4x)#?
• Prove #Cos^2A+Sin^2A*cos2B=cos^2B+sin^2B*cos2A#?
• Cot B + cos B divided by sec B - cos B = csc B + 1 divided by tan^2 B can it be verified?
• Sin B ( sin B + cot B ) = 1 + cos A - cos^2 A ?
• How do you prove? #[cos(pi/2-x)-2cos(pi/2-x)sin^2x+cos(pi/2-x)sin^4x]sec^5(-x) = tanx#
• Verify the identity #sin x cos x(tan x + cot x) = 1 #?
• How do I prove this equation is an identity? Sin(x)/csc(x)+Cos(x)/Sec(x)=1
• Cscx/cotx+tanx= cosx?
• Prove cos^2x tanx / sinx = cosx?
• Prove/verify the identities: #tan(x+(3pi)/4) = (tanx-1)/(1+tanx)#?
• Prove the identity. #sin(pi+x)=-sinx# Have to show the statements and the rules?
• How do I prove this? cot(x)(1-cos(2x))=sin(2x)
• How do you prove that: #(sin^2 x+ cos^2 x + cot^2 x) / (1+tan^2 x) = cot^2 x# ?
• Prove that: cos pi/12-sin pi/12=1/root 2.What should be the answer for this question?
• How do you prove #(tanx+sinx)/(2tanx)=cos^2(x/2)#?
• How do you prove #(1+tan^2x)/(1-tan^2x)=1+tan2x.tanx# ?
• How do you use trig identities to show that this is true? #tan^3x/(1+tan^2x)+cot^3x/(1+cot^2x)=(1-2cos^2x sin^2x)/(sinxcosx)#
• How do you prove that #sqrt(3)cos(x+pi/6) - cos(x+pi/3) = cos(x)-sqrt3sinx# ?
• Prove the identity # sin theta/ (1-cos theta) - 1/sin theta -= 1/tan theta #?
• Prove that ??#(Sinx+Sin2x+Sin3x)/(cosx+cos2x+cos3x) = tan2x#
• Prove that #(1+cosx)/sinx=sinx/(1-cosx)#?
• Please simplify #arctan(x+2)-arctanx# ? Thanks
• How do you prove that #cos2x+cosx=(cosx+1)(2cosx-1)#?
• Prove the trigonometric identity?