Delphi Basics : Cos command

DelphiBasics

Cos
Function

The Cosine of a number

System unit

function Cos(const Number Extended):Extended;

Description

The Cos function is a mathematical function giving the Cosine value of a Number value given radians.

PI radians

= 180 degrees

Notes

The System unit supports only the following angular functions:

ArcTan
Sin
Cos

Related commands

ArcCos		The Arc Cosine of a number, returned in radians
ArcSin		The Arc Sine of a number, returned in radians
ArcTan		The Arc Tangent of a number, returned in radians
Sin		The Sine of a number
Tan		The Tangent of a number

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Example code : Get the Cosine of 60 degrees

var
  float : single;
begin
  // The Sine of 60 degrees = 0.5
  float := Cos(PI/3);  // = 180/3 = 60 degrees
  ShowMessage('Cos(PI/3) = '+FloatToStr(float));
end;

Show full unit code

Cos(PI/3) = 0.5