Math, asked by kniha015, 2 days ago

cot theta - cot 2 theta = cosec 2theta

Answers

Answered by shivichouhan292

1

Step-by-step explanation:

cotθ−cot2θ

=

sinθ

cosθ

−

sin2θ

cos2θ

=

sinθ.sin2θ

sin2θ.cosθ−cos2θ.sinθ

=

sinθ.sin2θ

sin(2θ−θ)

=

sin2θ

1

=csc2θ.

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