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int(pi//4)^(3pi//4)(dx)/(1+cosx) is equa...

`int_(pi//4)^(3pi//4)(dx)/(1+cosx)` is equal to

A

2

B

`-2`

C

`1/2`

D

`-1/2`

Text Solution

Verified by Experts

The correct Answer is:
A
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