In Fig. 10.77, `P A` and `P B` are tangents to the circle with centre `O` such that `/_A P B=50o` . Write the measure of `/_O A B` . (FIGURE)

In Figure, P A and P B are tangents to the circle with centre O such that /_A P B=50^@ . Write the measure of /_O A B .

In Fig.10.77,PA and PB are tangents to the circle with centre O such that /_APB=50o . Write the measure of /_OAB. (FIGURE)

APB is a tangent to a circle with centre O at a point P if /_QPB = 50° , the measure of /_POQ is

In Fig. 10.88, A P B is a tangent to a circle with centre O at point P . If /_Q P B=50o , then the measure of /_P O Q is (FIGURE) 100o (b) 120o (c) 140o (d) 150o

In Fig. 10.96, if T P and T Q are tangents drawn from an external points T to a circle with centre O such that /_T Q P=60o , then /_O P Q= (FIGURE) 25o (b) 30o (c) 40o (d) 60o

If TP and TQ are the two tangents to a circle with centre O so that /_P O Q=110^@ , then /_P T Q is equal to

Two tangent segments P A and P B are drawn to a circle with centre O such that /_A P B=120^circ . Prove that O P=2\ A P .

In Figure, A P B is a tangent to a circle with centre O at point P . If /_Q P B=50^@ , then the measure of /_P O Q is (a) 100^@ (b) 120^@ (c) 140^@ (d) 150^@

In Fig. 10.101, P Q and P R are two tangents to a circle with centre O . If /_Q P R=46^o , then /_Q O R equals (a) 67^o (b) 134^o (c) 44^o (d) 46^o

If P A and P B are tangents from an outside point P such that P A=10 c m and /_A P B=60^o . Find the length of chord A B .