CircleHard
Question
The distance between the chords of contact of tangents to the circle x2 + y2 + 2gx + 2fy + c = 0 from the origin and from the point (g, f) is -
Options
A.
B.
C.
D.
Solution
Equation of AB : gx + fy + c = 0 ........(i)
Equation of CD : gx+ fy + g(x + g) + f(y + f) + c =
gx + fy +
= 0 ......(ii)Distance between AB & CD will be
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