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If x= a cos^(2) theta sin theta and y=...

If ` x= a cos^(2) theta sin theta and y= a sin^(2) theta cos theta , " then " ((x^(2)+y^(2))^(3))/(x^(2)y^(2))=`

A

`a^(2)`

B

`2a^(2)`

C

`3a^(2)`

D

a

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A
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