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atan (Math.atan method)
public static atan(tangent:Number) : Number
Computes and returns the value, in radians, of the angle whose tangent is specified in the
parameter tangent. The return value is between negative pi divided by 2 and positive pi
divided by 2.
Parameters
tangent:Number - A number that represents the tangent of an angle.
Returns
Number - A number between negative pi divided by 2 and positive pi divided by 2.
Example
The following example displays the angle value for several tangents.
trace(Math.atan(-1)); // output: -0.785398163397448
trace(Math.atan(0)); // output: 0
trace(Math.atan(1)); // output: 0.785398163397448
See also
acos (Math.acos method), asin (Math.asin method), atan2 (Math.atan2 method),
cos (Math.cos method), sin (Math.sin method), tan (Math.tan method)
atan2 (Math.atan2 method)
public static atan2(y:Number, x:Number) : Number
Computes and returns the angle of the point y/x in radians, when measured counterclockwise
from a circle's x axis (where 0,0 represents the center of the circle). The return value is
between positive pi and negative pi.
Parameters
y:Number - A number specifying the y coordinate of the point.
x:Number - A number specifying the x coordinate of the point.
Returns
Number - A number.
Math 381