Find the value of t in the diagram

  • A 63\(^o\)
  • B 117\(^o\)
  • C 126\(^o\)
  • D 234\(^o\)
waec 2018mathematics

The correct answer is C. 126\(^o\)

In the diagram,

\(\alpha\) = 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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