In the figure shown PT and PAB are the tangent and the secant drawn to a circle; If PT = 12 cm and PA = 8 cm, then AB is equal to
1
16 cm
2
10 cm
3
4\(\sqrt{5}\) cm
4
18 cm
In the figure shown PT and PAB are the tangent and the secant drawn to a circle; If PT = 12 cm and PA = 8 cm, then AB is equal to