util.Math.atan
Computes the arc tangent of the passed value, measured in radians.
Syntax
util.Math.atan(
   x FLOAT )
  RETURNS FLOAT- x is a floating point value.
Usage
Returns NULL if the argument
 provided is invalid.
Computes the arc tangent of the passed value, measured in radians.
util.Math.atan(
   x FLOAT )
  RETURNS FLOATReturns NULL if the argument
 provided is invalid.