MathArctan - MQL4 Documentation

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double MathArctan(

double x)

The MathArctan returns the arctangent of x. If x is 0, MathArctan returns 0. MathArctan returns a value within the range of -π/2 to π/2 radians.

Parameters:

A number representing a tangent.

Sample:

  double x=-862.42, y;
  y=MathArctan(x);
  Print("Arctangent of ",x," is ",y);
  //Output: Arctangent of -862.42 is -1.5696