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the distance between the chords of contact of tangents to the circle x2+y2+2gx+2fy+c=0 from the origin and the point (g,f) is

the distance between the chords of contact of tangents to the circle x2+y2+2gx+2fy+c=0 from the origin and the point (g,f) is

Grade:11

2 Answers

Aslam Basha Mohammad
34 Points
9 years ago

we can calculate it by the general form of the circle.

Shubham Jha
10 Points
9 years ago

eqn. of chord of contact is gx+fy+c=0.therefore the perpendicular dist. from (g,f) will be (g^2+f^2+c)/root(g^2+f^2).

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