PT is a tangent & PAB is a secant of the circle meeting the circle at A & B. If PA=4cm & AB=5cm. What is the length of PT?

Asked by araima2001 | 6th Nov, 2015, 11:02: AM

Expert Answer:

PT is a tangent to the circle at T.
PAB is a secant such that PA = 4 cm, AB = 5 cm
So, PB = PA + AB = 4 cm + 5 cm = 9 cm
Using Tangent-secant property,
PT2 = PA . PB
PT2 = 4 X 9 = 36
PT = 6 cm

Answered by satyajit samal | 8th Nov, 2015, 08:15: AM

Queries asked on Sunday & after 7pm from Monday to Saturday will be answered after 12pm the next working day.