atan(value)
The inverse of tan(), returns the arc tangent of a value. This function expects the values in the range of -1 to 1 and values are returned in the range 0 to PI (3.1415927).
Type: function
Parameter(s):
- value {Number}:
The value whose arc tangent is to be returned.
Returns:
-
{Number}:
The arc tangent.