Question
In the given figure, AOB is a straight line. If $\angle BOC , \angle COD$ and $\angle DOA$ be in the ratio $2: 3: 4$, find the measure of each of these angles.
✓
Answer
$\angle BOC =40^{\circ}, \angle COD =60^{\circ}$ and $\angle DOA =80^{\circ}$
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