Question

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HOW TO SLOVE TRIGONOMETRIC PROVE QUESTION?
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Answer 1

Step no. 1-Take LHS side first and convert every ratio in sine or cosine if other ratio are given except those.

Step no. 2-Apply basic mathmatical operation like taking lcm, adding subtracing,multiplying or dividing by taking out common divisor if any.

Step no. 3-Apply trigonometry identity sin^2x+cos^2x =1 in any maneer as applicable.This step or previous step no.2can be interchanged and used as many times as possible.

Step no. 4-If above step no2 &3 are not possible then first rationalise it and then apply step no.2 & 3.
If you do not get the RHS side then now taking this side apply above 1 to 4 steps to this side.