From Clomosy Docs
function Sin(const Number Extended):Extended;
The Sin function is a mathematical function giving the Sine value of a Number value given radians.
Example:
const PI = 3.14;
var floatValue : float;
begin
floatValue := Sin(PI/6); ShowMessage('Sin(PI/6) = '+FloatToStr(floatValue));
end;
Output:
Sin(PI/6) = 0,499770102643102