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If x=acos^3t y =asin^3t then (dy)/(dx)=...

If `x=acos^3t y =asin^3t` then `(dy)/(dx)=`

A

` -3sqrt( (y)/(x))`

B

` 2sqrt((y)/(x))`

C

` -3 sqrt( (x)/(y))`

D

` 3 sqrt( (x)/(y))`

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The correct Answer is:
A
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