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ArcTan¶

Calculate inverse tangent.

Declaration¶

Source position: mathh.inc line 123

function ArcTan(d: ValReal) : ValReal;

Description¶

Arctan returns the Arctangent of X, which can be any Real type. The resulting angle is in radial units.

Errors¶

None

See also¶

Name	Description
Sin	Calculate sine of angle.
Cos	Calculate cosine of angle.

Example¶

Program Example4;

{ Program to demonstrate the ArcTan function. }

Var R : Real;

begin
  R:=ArcTan(0);      { R:=0 }
  R:=ArcTan(1)/pi;   { R:=0.25 }
end.