Question #26441

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Answer 1 · 2017-03-01T14:48:20

See the Proof given in the Explanation.

I think that, the Identity should like this :

$sin^2Thetacsc^2Theta=sin^2Theta+cos^2Theta," instead of,"$

$sin2Theta csc 2Theta=sin 2 Theta + cos 2 Theta$ .

The Proof :

$"The L.H.S.="sin^2Thetacsc^2Theta$

$=(sin^2 Theta)(1/sin^2 Theta)$

$=1=sin^2 Theta+ cos^2 Theta"=The R.H.S."$