Q1,Q2,Q3 Ex10.2- tangents PA and PB from a point P to a circle with centre O are inclined at angle

In this video we will learn the solutions of the given below problems.
EXERCISE 10.2
In Q.1 to 3, choose the correct option and give justification.
1. From a point Q, the length of the tangent to a circle is 24 cm and the distance of Q from the centre is 25 cm. The radius of the circle is
(A) 7 cm (B) 12 cm
(C) 15 cm (D) 24.5 cm
2. In Fig. 10.11, if TP and TQ are the two tangents to a circle with centre O so that ∠ POQ = 110°,then ∠ PTQ is equal to
(A) 60° (B) 70°
(C) 80° (D) 90°
3. If tangents PA and PB from a point P to a circle with centre O are inclined to each other at angle of 80°, then ∠ POA is equal to
(A) 50° (B) 60°
(C) 70° (D) 80°