alleryThe length of an arc of a circle gives the radian measure of the angle it subtends at the:
AChord
BCurve
CCentre
DCorner
Answer & Solution
Correct answer: C. Centre
1. The angle is measured where the two radii meet.
2. That meeting point is the middle of the circle.
3. The length of an arc gives the radian measure of the angle the arc subtends at the centre of the circle.
4. So the answer is the centre.
_Source: syllabus Mathematics, Ch 3 'Trigonometric Functions'_
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