I have the question "What angle is subtended at the center of a circle of radius $2$ km by an arc of length $9$ m?"
I am not sure which formula to use to find the subtended angle.
2026-03-26 11:00:01.1774522801
Finding subtended angle at the centre of a circle from known arc length
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For any circle:
$${ arc=radius*\theta}$$
Where theta is in radian.
From the given data:
$${\theta=arc/radius=0.009/2=0.0045 radians}$$