TR is the tangent to the circle PQR with centre O. Find the size of ∠PRT
-
A.
44o -
B.
46o -
C.
60o -
D.
74o -
E.
118o
Correct Answer: Option C
Explanation
Reflex < POQ = 360° – 148° = 212°
< PRO = 360° – 330° = 30°
But < ORT = 90° (implies) < PRT = 90° – 30° = 60°