Shiny Language Reference
Language Reference > Math Functions
atan
double atan(double Param);
Calculates arctangent
Performs the trigonometric arctangent operation on x and returns an angle in the range from -PI/2 to PI/2 expressed in radians.
Parameters
Param
Value whose arctangent has to be calculated.
Return Value
Arctangent of Param
Example Code
// Calculate arctangent. PI is defined internally by SSEdit
double Res = atan(0.5) * 180 / PI;