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what is the formula for length of chord of contact?

what is the formula for length of chord of contact?

Grade:12

2 Answers

Badiuddin askIITians.ismu Expert
147 Points
11 years ago

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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Tyutuhj5ixitco
11 Points
3 years ago
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