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The distance between the chords of conta...

The distance between the chords of contact of tangents to the circle `x^2+y^2+2gx +2fy+c=0` from the origin & the point (g,f) is

A

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

B

`(1)/(2)(g^(2)+f^(2)+c)`

C

`(g^(2)+f^(2)+c)/(2sqrt(g^(2)+f^(2)))`

D

`(g^(2)+f^(2)-c)/(2sqrt(g^(2)+f^(2)))`

Text Solution

Verified by Experts

The correct Answer is:
D
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