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
 
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