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If the angle between tangents drawn to x...

If the angle between tangents drawn to `x^2 +y^2 + 2g x + 2 fy + c = 0` from `(0,0)` is `pi/2,` then

A

`g^(2) + f^(2) =3c`

B

`g^(2) + f^(2) = 2c`

C

`g^(2) + f^(2) = 5c`

D

`g^(2)+ f^(2) = 4c`

Text Solution

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The correct Answer is:
B
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