Question
In the figure, NOP is a straight line and both ∠MOQ and ∠SOR are right angles. Given that ∠NOS = 20° and ∠MOP = 61°, find ∠ROQ.
3 m

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In the figure, NOP is a straight line and both ∠MOQ and ∠SOR are right angles. Given that ∠NOS = 20° and ∠MOP = 61°, find ∠ROQ.