In the figure given below PT is a tangent to the circle. The ratio
PA×PBCD×BD=?
PT / TD
( PT / TD )2
( PT / PD )2
PD/PT
PA.PB=PT2 -- (i)
⇒ DC.DB= DT2 -- (ii)
∴(i) (ii) →
⇒ PA.PBDC.DB=(PTDT)2
In the figure given below, diameter AB and chord CD of a circle meet at P. PT is a tangent to the circle at T. CD=7.8 cm, PD = 5 cm, PB = 4 cm. Select the statements that are true.
If PT is the tangent to the circle as shown below and PA = 9 and PB = 16, find PT.
In the given figure, PT is a tangent to the circle. If PA=5 cm and PT=10 cm, then the radius of the circle is ___ cm.