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Radius of the parametric equation repres...

Radius of the parametric equation represented by `x = 2a ((1- t ^(2))/(1+t ^(2))),y = (4at)/(1+t ^(2)) ` is

A

a

B

`a ^(2)`

C

`3a`

D

`2a`

Text Solution

Verified by Experts

The correct Answer is:
D
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