Unit 'System' Package
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ArcTan

Calculate inverse tangent.

Declaration

Source position: mathh.inc line 126

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

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.

Documentation generated on: Oct 02 2024