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The value of the integral int(0)^(1)(dx)...

The value of the integral `int_(0)^(1)(dx)/(x^(2)+2x cos alpha +1),0ltalpha lt pi` is

A

`sin alpha`

B

`alpha sin alpha`

C

`2alpha sin alpha`

D

`alpha/2 sin alpha`

Text Solution

Verified by Experts

The correct Answer is:
D
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