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The value of the integral int0^(pi//3)(...

The value of the integral `int_0^(pi//3)(xsinx)/(cos^2x)\ dx` is

A

`((pi)/(3) - log (3pi)/( 2))`

B

`2 ((2pi)/( 3) - log (2 + sqrt(3) ) )`

C

`3 (pi)/(2) - log tan (pi)/(12) )`

D

none of these

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The correct Answer is:
B
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