Mathematics
Prove that the angle subtended at the center of a circle is bisected by the radius passing through the mid-point of arc.
Circles
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Answer
The figure of the circle is shown below:

Let C be the mid-point of arc AB.
∴ AC = BC.
Since, equal arcs subtend equal angles at center.
∴ ∠AOC = ∠BOC.
Hence, proved that ∠AOC = ∠BOC.
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