10 In the
accompanying diagram, PA is tangent to
circle O at A and PBC is a secant. If CB = 9 and
PB = 3, find the length of PA.
C

8
A
a
CB=9
PB = 3
PA=X
5

10 In the accompanying diagram PA is tangent to circle O at A and PBC is a secant If CB 9 and PB 3 find the length of PA C 0 8 A a CB9 PB 3 PAX 5 class=