In the diagram above, O is the center of the circle PQRS ...
In the diagram above, O is the center of the circle PQRS and ∠QPS = 36°. Find ∠QOS
36o
72o
108o
144o
288o
Correct answer is B
< QOS = 2 < QPS (angle subtended at the centre)
∴ < QOS = 2 x 36° = 72°
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