Whats is the relation between angel ,length of arc and radius of a circle
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the angle subtends, s, divided by the radius of the circle, r. One radian is the central angle that subtends an arc length of one radius (s = r). Since all circles are similar, one radian is the same value for all circles.
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Arc Measure: In a circle, the degree measure of an arc is equal to the measure of the central angle that intercepts the arc. ... One radian is the central angle that subtends an arc length of one radius (s = r). Since all circles are similar, one radian is the same value for all circles.
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