int(0)^(pi//2) x sin x cos x dx...

`int_(0)^(pi//2) x sin x cos x dx`

A

`int_(0)^(pi//3)cotcos 2nx dx`

B

`int_(0)^(pi//2)cot sin 2nx dx`

C

`int_(0)^(pi//2)tancos 2nx dx`

D

`(1)/(2n)int_(0)^(pi//2)tan sin 2n xdx`

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The correct Answer is:

D

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