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The value of the definite integral int0^...

The value of the definite integral `int_0^1(1/(x^2+2xcosalpha+1))dx` for `0 < alpha < pi` is equal

A

`sin alpha`

B

`tan^(-1)(sin alpha)`

C

`alpha sin alpha`

D

`(alpha)/2(sin alpha)^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
D
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