Grade 12th passAnalytical Geometry
What is the formula for the length of chord of contact of a circle?
What is the formula for the length of chord of contact of a circle?
1 Answer
Vikas TU
length of chord of contact of tangents drawn from point (x1,y1) to the parabola y2=4ax is
= {(y12 -4ax1)(y12 +4a2)}^1/2 /a
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