Question

In the given figure, find TP if AT = 16 cm and AB = 12 cm.

Answer 1

PT is the tangent and TBA is the secant of the circle.

Therefore, TP² = TA × TB

TP² = 16 × (16 − 12) = 16 × 4 = 64 = (8)²

Therefore, TP = 8 cm