Question

The radius of a circle is 4 cm, the length of an arc of the circle, which subtends an angle of
1 radian at the centre is​

Answer 1

Answer:

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. The arc measure of the central angle of an entire circle is 360º and the radian measure of the central angle of an entire circle = 2π. 1.

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