In the diagram, PS and RS are tangents to the circle centre O,
MATHEMATICS
WAEC 2018
In the diagram, PS and RS are tangents to the circle centre O,
- A. 110°
- B. 135°
- C. 165°
- D. 225°
Correct Answer: C. 165°
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\(^o\)
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