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If x=2cos theta -cos 2theta ,y=2sin the...

If ` x=2cos theta -cos 2theta ,y=2sin theta -sin 2theta ,then (dy)/(dx) =`

A

` tan ((theta )/(2))`

B

` -tan((theta)/(2))`

C

` tan ((3theta )/( 2))`

D

` -tan ((3theta )/(2))`

Text Solution

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The correct Answer is:
C
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