find x

Asked by araima2001 | 8th Nov, 2015, 12:01: PM

Expert Answer:

PT is a tangent to the circle.
By tangent-secant property,
PT2= PA.PB
52=4 X (4 + x)
4+x = 25 / 4
x= (25/4) - 4
x = 9 / 4

Answered by satyajit samal | 9th Nov, 2015, 04:24: PM