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The equation of the normal to the curve ...

The equation of the normal to the curve `x=a(theta-sintheta),y=a(1-costheta)` at `(theta=pi//2)` is

A

`2x-2y+4a-pia=0`

B

`2x-2y-pia=0`

C

`2x+2y+pia=0`

D

`2x+2a-4a-pia=0`

Text Solution

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The correct Answer is:
A
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