Answers edited by Abhishek K.

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• If 2tan^-1x=sin^-1K. What will be the value of k?
  
• If tan alpha=x+1 & tan bita=x-1 Then find what is 2cot(alpha-bita)=?
  
• `(1+cotx)=(2cos2x)/(sin2x-2sin^2x)` prove?
  
• Please solve q 11?
  
• Show prove the below identity? `1/cos290 + 1/(sqrt3sin250) = 4/sqrt3`
  
• Rewrite `2sin^6(x)` in terms of an expression containing only cosines to the power of one?
  
• How do you simplify `1/sqrt(32)`?
  
• Cos^2 π/8 + cos^2 3π/8 + Cos^2 5π/8 + cos^2 7π/8 Solve And Answer The Value ?
  
• Solve the equation `tan2theta=-sqrt3`?
  
• 4cosa.cos(60-a).cos(60+a)=cos3a ?
  
• How do you solve `-0.5w = 3.6`?
  
• How do you solve `\sin ( 2x ) - \cos ( 3x ) = 0`?
  
• How do you solve `\frac { \tan \theta - \tan 27^ { \circ } } { 1+ \tan \theta \tan 27^ { \circ } } = 1`?
  
• Prove that `Cos^6(x)+sin^6(x)=1/8(5+3cos4x)`?
  
• How do you calculate `sin ((13pi)/6)`?
  
• Prove the trigonometric identity ?
  
• 1+ sin teta +cos teta over 1 +sin teta - cos teta is equals to 1+ cos teta over sin teta?
  
• How to prove?
  
• How do you solve `12z=108`?
  
• How do you evaluate `(tan^2((pi)/7) + tan^2((2\pi)/7) + tan^2((3pi)/7))/(cot^2 (pi/7) + cot^2 ((2\pi)/7) + cot^2 ((3\pi)/7))`?
  
• If A+B=225°, then find the value of `(cot A/(1+cot A))(cot B/(1+cot B))`?
  
• What is the length of ST?
  
• How do you prove (cotx + cscx / sinx + tanx) = (cotx)(cscx)?
  
• Find the value of sinπ/14 × sin3π/14 × sin5π/14 × sin7π/14 × sin9π14 × sin11π/14 × sin13π/14 ?
  
• Prove that Sin(pi/4 + x) + sin (pi/4 - x) = root 2 cos x ?
  
• If, θ=2π/7 So Prove That? Secθ+Sec2θ+Sec4θ = -4
  
• Thoughts on the recent announcement made about the future of the Socratic website? Share them here!
  
• How do you solve `|5x - 5| < - 25`?
  
• `cos⁻¹(sqrtcos α)−tan⁻¹(sqrtcos α)=x` ,then what is the value of sin x ?
  
• Question #132a1
  
• Question #f1264
  
• Question #2249a
  
• Find the value of sin (a+b) if tan a=4/3 and cot b= 5/12, 0^degrees<a<90^degrees and 0^degrees<b<90^degrees ?
  
• Please solve q 80 ?
  
• `6(tanx)^2-4(sinx)^2=1`. Solve x?
  
• How do you multiply `e^(( 13 pi )/ 8 i) * e^( pi/2 i )` in trigonometric form?
  
• Question #78c95
  
• A circle's center is at `(2 ,1 )` and it passes through `(3 ,2 )`. What is the length of an arc covering `(7pi ) /12` radians on the circle?
  
• The winner in a vote for class president received `3/4` of the 240 votes. How many votes did the winner receive?
  
• How do you verify `tan^5 x = tan ^3 x sec^2 x - tan^3 x`?
  
• Prove that ?
  
• Question #58dad
  
• How do you solve `tan 4x = tan 2x`?
  
• Tan(x/2)cos^2(x)-tan(x/2) = sin(x)/sec(x)-sin(x) Verify?
  
• Question #6ef07
  
• Find AD ?
  
• Please solve q 64 ?
  
• How do you solve `tan 4x = tan 2x`?
  
• How do you write the vertex form equation of the parabola `y = (x - 3)^2 + 36`?
  
• `Sin2xcos2x-cos2x+sin2x-1=0` Solve for x?
  
• Please solve q 101?
  
• If A+B+C=90° then prove that `sin^2 (A/2)+sin^2 (B/2) + sin^2 (C/2) = 1-2sinA.sinB.sinC` ?
  
• How do you multiply and simplify `\frac { 5\sqrt { 3} * 3\sqrt { 15} } { 4\sqrt { 5} * 2\sqrt { 75} }`?
  
• How to find exact value COS(SIN^-1 4/5+TAN^-1 5/12) ?
  
• If alpha and beta are the zeros of x^2+pc+q, find (Alpha/beta +2)(beta/alpha+2) ?
  
• Prove that sinx-sin3x/sin^2x-cos^2x=2sinx ?
  
• `(CosA+2CosC)/(CosA+2CosB)= SinB/SinC`, Prove that the triangle is either isosceles or right angled?
  
• Can you prove that?
  
• How to solve this identity? Thank you!
  
• What is the general solution for `4cosx+3sinx=-1`?
  
• Question #ae98e
  
• How do you find the exact value of `sin(cos^-1(sqrt5/5))`?
  
• How do you prove that `sqrt(3)cos(x+pi/6) - cos(x+pi/3) = cos(x)-sqrt3sinx` ?
  
• Prove that `cos^3Acos(3A)+sin^3A(sin3A)=cos^3 2A` ?