[1-tan(90^(@)-theta]^(2) [cos^(2)(90^(@)...

`[1-tan(90^(@)-theta]^(2) [cos^(2)(90^(@)-theta)] -1` का मान क्या है ?

A

`- sin 2theta`

B

`-cos 2theta`

C

`cos 2theta`

D

`sin 2theta`

Verified by Experts

The correct Answer is:

A

[1-tan(90^(@)-theta]^(2) [cos^(2)(90^(@)-theta)] -1 का मान क्या है ?
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