A central angle ? is drawn in a circle of radius r. (a) The length of the arc subtended by ? is s = . (b) The area of the sector with central angle ? is A = .
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We know that the length of the arc subtended by the central angle $\theta$ is given by the formula $l = r\theta$, where $l$ is the arc length, $r$ is the radius, and $\theta$ is the central angle in radians. Show more…
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