In the diagram above, O is the center of the circle PQRS and ∠QPS =…

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Mathematics WAEC 1992

In the diagram above, O is the center of the circle PQRS and ∠QPS = 36°. Find ∠QOS

  • 36o
  • 72o checkmark
  • 108o
  • 144o
  • 288o

The correct answer is: B

Explanation

< QOS = 2 < QPS (angle subtended at the centre)

\(\therefore\) < QOS = 2 x 36° = 72°

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