Question

A point P is located outside the circle with centre O. A tangent from point P

touches the circle at A and a secant from P cuts the circle at B and C respectively.

PA =12cm PC= 16cm. Find the length of chord BC.

a) 12 b) 8

c) 9 d) None of these​

Answer 1

Always remember that the tangents and radius form 90 degree with each other !