((sin theta -2sin^(3)theta)/(2 cos^(3)th...

`((sin theta -2sin^(3)theta)/(2 cos^(3)theta-costheta))^(2) , theta ne 45^(@)` बराबर है :

A

`cosec^(2)theta`

B

`sec^(2)theta`

C

`cot^(2)theta`

D

`tan^(2)theta`

Verified by Experts

The correct Answer is:

B

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