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If x =theta -sin theta ,y=1-cos theta,t...

If ` x =theta -sin theta ,y=1-cos theta,then (d^(2)y)/(dx^(2))=`

A

` (-1)/( 4sin ^(4)((theta)/(2)))`

B

` (1)/( 4sin ^(4)((theta)/(2)))`

C

` (-1)/(2sin ^(4)((theta)/(2)))`

D

` (1)/(2sin ^(2)((theta)/(2)))`

Text Solution

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The correct Answer is:
A
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