In the diagram, PS and RS are tangents to the circle centre O,
-
A.
110(^o) -
B.
135(^o) -
C.
165(^o) -
D.
225(^o)
Explanation
In the diagram,
Thus, m = 2 x 55(^o) (is a bisector of obtuse
m = 110(^o)
n = (frac{1}{2}) x 110(^o) (angle at centre = 2 x angle at circum)
n = 55(^o)
= 165(^o)