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Cos

Synopsis

     function Cos (x: Real): Real;

or

     function Cos (z: Complex): Complex;

Description

Cos returns the cosine of the argument. The result is in the range -1 < Cos (x) < 1 for real arguments.

Conforming to

The function Cos is defined in ISO 7185 Pascal; its application to complex values is defined in ISO 10206 Extended Pascal.

Example

     program CosDemo;
     begin
       { yields 0.5 since Cos (Pi / 3) = 0.5 }
       WriteLn (Cos (Pi / 3) : 0 : 5)
     end.

See also

ArcTan, Sin, Ln, Arg.