The angle subtended by an arc at the centre is double of the angle subtended by it at any point on the remaining part of the circle – Theorem – geometry
The angle at the centre of a circle is twice the angle at the circumference, when both are subtended by the same arc. Given: A circle with centre at O, arc BC of this circle subtends angles ∠BOC at centre O and ∠BAC at a point A remaining part of the circle. To Proof: ∠BOC […]
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