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Question
An equilateral triangle ABC is inscribed in a circle with centre O. Then, BOC is equal to ___.
An Equilateral Triangle ABC Is Inscribed In A Circle With Ce...
Options:
A .  30∘
B .  60∘
C .  90∘
D .  120∘
Answer: Option D
:
D
Given thatΔABC is equilateral.
BAC=60
Since the angle subtended by a chord at the centre of a circle is twice the angle subtended by the same chord at any other point on the remaining part of the circle, we have
BOC=2BAC=2×60=120.

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