Find the value of t in the diagram
MATHEMATICS
WAEC 2018
Find the value of t in the diagram
- A. 63°
- B. 117°
- C. 126°
- D. 234°
Correct Answer: C. 126°
Explanation
\(\alpha\) = 180\(^o\) - 177\(^o\) (angles on a straight line)
\(\alpha\) = 63\(^o\)
t = 2 x 63\(^o\) (angle at centre = 2 x angle at circum)
= 126\(^o\)
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