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If x=a cos^(3) theta , y= a sin^(3) the...

If ` x=a cos^(3) theta , y= a sin^(3) theta ` then

A

`x^(2//3) + y^(2//3)=a^(2//3)`

B

`x^(2)+y^(2)=a^(2)`

C

`x^(3//2) + y^(3//2) =a^(3//2)`

D

`y^(2)=4ax`

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