Grade 12Analytical Geometry
what is the formula for length of chord of contact?
what is the formula for length of chord of contact?
2 Answers
Badiuddin askIITians.ismu Expert
Dear manv
length of chord of contact of tangents drawa from point (x1,y1) to the parabola y2=4ax is
= {(y12 -4ax1)(y12 +4a2)}1/2 /a
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