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d/(dx)[tan^(- 1)sqrt((1+cosx/2)/(1-cosx/...

`d/(dx)[tan^(- 1)sqrt((1+cosx/2)/(1-cosx/2)))`

A

`-(1)/(4)`

B

`(1)/(2)`

C

`-(1)/(2)`

D

`(1)/(4)`

Text Solution

Verified by Experts

The correct Answer is:
A
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