Let an angle whose in radians is be placed the Cartesian plane such that one of its rays corresponds to the nonnegative axis and one can go from the point to the point that is the intersection of the other ray of the angle with the circle by traveling exactly units on the circle. (If is positive, the distance should be traveled counterclockwise; otherwise, the distance should be traveled clockwise. Also, note that “other ray” is used quite loosely, as it may also correspond to the nonnegative axis also.) Then is the terminal ray of the angle.
The picture below shows the terminal ray of the angle .
|Date of creation||2013-03-22 16:06:11|
|Last modified on||2013-03-22 16:06:11|
|Last modified by||Wkbj79 (1863)|