What is the ratio of the angles subtended by a chord at the centre of a circle to the angle subtended at any point on the circumference of the circle?
Given:
A fixed chord in a circle subtends an angle at the centre and an angle at a point on the circumference.
Concept Used:
Angle subtended by an arc (or chord) at the centre is twice the angle subtended on the circumference standing on the same arc:
Solution:
Hence, the ratio (centre : circumference) = 2 : 1.
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