Question

prove the equation...
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Answer 1

CHECK THE ATTACHMENT...

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Answer 2

Answer:

Sin Theta - 2 sin3 theta /2cos3 theta- cos theta

= sin theta (1- 2 sin2 theta )/ cos theta (2 cos2 theta - cos theta )

= sin theta (1- 2 (1- cos2 theta )/cos theta (2 cos2 theta - cos theta )

= sin theta (1-2+ 2 cos2 theta)/cos theta (2 cos2 theta - cos theta )

= sin theta (2 cos2 theta - 1)/cos theta (2 cos2 theta - cos theta )

= sin theta / cos theta

= tan theta

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