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    ArcSin

    Return inverse sine.

    Declaration

    Source position: math.pp line 532

    function ArcSin(x: Single) : Single;

    function ArcSin(x: Double) : Double;

    function ArcSin(x: Extended) : Extended;

    Description

    Arcsin returns the inverse sine of its argument x. The argument x should lie between -1 and 1.

    Errors

    If the argument x is not in the allowed range, an EInvalidArgument exception is raised.

    See also

    Name Description
    arccos Return inverse cosine.
    arcosh Return inverse hyperbolic cosine.
    arsinh Return inverse hyperbolic sine.
    artanh Return inverse hyperbolic tangent.

    Example

    Program Example1;

{ Program to demonstrate the arcsin function. }

Uses math;

  Procedure WriteRadDeg(X : float);

  begin
    Writeln(X:8:5,' rad = ',radtodeg(x):8:5,' degrees.')
  end;

begin
  WriteRadDeg (arcsin(1));
  WriteRadDeg (arcsin(sqrt(3)/2));
  WriteRadDeg (arcsin(sqrt(2)/2));
  WriteRadDeg (arcsin(1/2));
  WriteRadDeg (arcsin(0));
  WriteRadDeg (arcsin(-1));
end.