Angle Measure
Angle Measure
This Demonstration shows the measure of an angle in degrees and radians.
Details
Details
In order to measure an angle , a circular arc centered at the vertex of the angle is drawn. The length of the arc is then divided by the radius of the circle , and possibly multiplied by a scaling constant (which depends on the units of measurement that are chosen): .
θ
s
r
k
θ=k
s
r
The value of thus defined is independent of the size of the circle: if the length of the radius is changed then the arc length changes in the same proportion, so the ratio is unaltered.
θ
s/r
Angles are usually measured in units of degrees or radians.
External Links
External Links
Permanent Citation
Permanent Citation
Frederick Wu, Bing Ye
"Angle Measure"
http://demonstrations.wolfram.com/AngleMeasure/
Wolfram Demonstrations Project
Published: March 7, 2011