Mathematics

Mathematics

Problem

Prove that for any external point

P

, the length of the chord of contact

T_{1}T_{2}

is given by

L_{\text{chord}} = \frac{2rL}{d}

, where

r

is the radius,

L

is the length of the tangent

PT_{1}

, and

d

is the distance

OP

.

Browse the problem library