Tan

Return tangent

Declaration

Source position: math.pp line 336

  function Tan(x: Float) : Float;

Description

Tan returns the tangent of x. The argument x must be in radians.

Errors

If x (normalized) is pi/2 or 3pi/2 then an overflow will occur.

See also

Name Description
arccos Return inverse cosine
arcsin Return inverse sine
sincos Return sine and cosine of argument
tanh Return hyperbolic tangent

Example

Program Example47;
{ Program to demonstrate the Tan function. }
Uses math;
Procedure DoTan(Angle : Float);
begin
  Write('Angle : ',RadToDeg(Angle):8:6);
  Writeln(' Tangent : ',Tan(Angle):8:6);
end;
begin
  DoTan(0);
  DoTan(Pi);
  DoTan(Pi/3);
  DoTAn(Pi/4);
  DoTan(Pi/6);
end.