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The equation of the auxiliary circle of ...

The equation of the auxiliary circle of `x^(2)/(16)-y^(2)/(25)=1` is

A

`x^(2)+y^(2)=16`

B

`x^(2)+y^(2)=9`

C

`x^(2)+y^(2)=5`

D

`x^(2)+y^(2)=25`

Text Solution

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The correct Answer is:
A
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