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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
11 years ago

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

Shubham Jha
10 Points
11 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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