Converting Radians to Degree measures ( vice versa ) & the Arc Length
We now can easily obtain a formula to convert from degrees to radians and vice-versa. To convert from degrees to radians, multiply the angle by /180. To convert from radians to degrees, multiply the angle by 180/ . How do you find arc length without the radius? To calculate arc length without radius, you need the central angle and the sector area: Multiply the area by 2 and divide the result by the central angle in radians. Find the square root of this division. Multiply this root by the central angle again to get the arc length. The units will be the square root of the sector area units.
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