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Evaluate int(0)^(pi)(x dx)/(1+cos alpha ...

Evaluate `int_(0)^(pi)(x dx)/(1+cos alpha sin x)`,where `0lt alpha lt pi`.

A

`(pi)/(sin alpha)`

B

`(pi alpha)/( sin alpha)`

C

`(alpha)/( sin alpha)`

D

`(sin alpha)/(alpha)`

Text Solution

Verified by Experts

The correct Answer is:
B
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