Question
In the figure, not drawn to scale, YA, ZB and OZ are straight lines. Given that O is the centre of the circle and ∠OYB = 30°, find ∠OAB.
3 m

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In the figure, not drawn to scale, YA, ZB and OZ are straight lines. Given that O is the centre of the circle and ∠OYB = 30°, find ∠OAB.