function Sin (x: Real): Real;or
function Sin (z: Complex): Complex;
Sin
returns the sine of the argument.
The result is in the range -1 <= Sin (x) <= 1
for real arguments.
The function Sin
is defined in ISO 7185 Pascal;
its application to complex values is defined in ISO 10206 Extended Pascal.
program SinDemo; begin { yields 0.5 since Sin (Pi / 6) = 0.5 } WriteLn (Sin (Pi / 6) : 0 : 5) end.