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### Sin

#### Synopsis

    function Sin (x: Real): Real;

or

    function Sin (z: Complex): Complex;

#### Description

`Sin` returns the sine of the argument. The result is in the range `-1 <= Sin (x) <= 1` for real arguments.

#### Conforming to

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

#### Example

    program SinDemo;
    begin
      { yields 0.5 since Sin (Pi / 6) = 0.5 }
      WriteLn (Sin (Pi / 6) : 0 : 5)
    end.

#### See also

ArcTan, Cos, Ln, Arg.