All rights reserved. Dow Jones: The Dow Jones branded indices are proprietary to and are calculated, distributed and marketed by DJI Opco, a subsidiary of S&P Dow Jones Indices LLC and have been licensed for use to S&P Opco, LLC and CNN.HAttr:198656;20,1914,411,15;12,2;109,191,246,255\}\{T:a,HAttr:198658;431,1914,34,15;431,1914,34,15;0,0,0,0;0,0,0,0,href:/services/terms.html,rel:nofollow\{Text: Terms,HAttr:198656;431,1914,34,15;12,2;109,191,246,255\}\}\{Text: under which this service is provided to you.
Thus 2 radians equals 360 degrees. This means that 1 radian = 180/ degrees, and 1 degree = /180 radians. The reason for this is that so many formulas become much easier to write and to understand when radians are used to measure angles. A very good example is provided by the formula for the length of a circular arc.
Degrees and radians. The measure of an angles can be expressed in degrees or radians, but in trigonometry radians are the most common. See Radians and Degrees. Recall than there are 2Ï radians in a full circle of 360Â°, so 1 radian is approximately 57Â°. In the figure above, click on radians to change units.