1.

Prove that 2 sec? 0 - sec4 0 - 2 cosec 28+ cosec 4e = cota=cot* e-tan" .CBSE 2012, 10​

Answer»

Step-by-step explanation:

2sec

2

θ−sec

4

θ−2cosec

2

θ+cosec

4

θ

=cot

4

θ−tan

4

θ

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