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1. |
P and Q are two points on a circle with centre at O. R is a point on the minor arc of the circle, between the points P and Q. The tangents to the circle at the points P and Q meet each other at the point S. If PSQ = 20 , then PRQ = ? |
A. | 80 |
B. | 200 |
C. | 160 |
D. | 100 |
Answer» E. | |