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int 0 ^(pi) ( xdx) /( 4 cos ^2x + 9 s...

`int _0 ^(pi) ( xdx) /( 4 cos ^2x + 9 sin ^2 x)=`

A

`(pi^2)/(12)`

B

`(pi^2)/(4)`

C

`(pi^2)/(6)`

D

`(pi^2)/(3)`

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The correct Answer is:
A
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