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If the angle between the tangents drawn ...

If the angle between the tangents drawn to `x^2+y^2+2gx+2fy+c=0` from (0, 0) is `pi/2,` then `g^2+f^2=3c` `g^2+f^2=2c` `g^2+f^2=5c` `g^2+f^2=4c`

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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