Math, asked by chethanravi070, 2 months ago

prove that cos theta-2 cos3 theta/ 2 sin3 theta- sin theta

Answers

Answered by keyboardavro

0

Answer:

Step-by-step explanation:

sinθ−2sin

3

θ

=

cosθ(2cos

2

θ−1)

sinθ(1−2sin

2

θ)

=

cosθ.cos2θ

sinθ.cosθ

=

cosθ

sinθ

=tanθ.

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