int(-pi//2)^(pi//2) ( sin ^(3) x . cos ^...

`int_(-pi//2)^(pi//2) ( sin ^(3) x . cos ^(3) x)/(cos^(2) x - sin ^(2) x)` dx = . . . .

A

`(pi)/(2)`

B

`(pi)/(4)`

C

0

D

`-pi`

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