# Function Reference

Sin

Calculates the sine of a number.

Sin ( expression )

Parameters

expression | Value in radians.

Return Value

Returns the trigonometric sine of number.

Remarks

1° = pi / 180 radians.

Related

Cos, Tan, ASin, ACos, ATan

Example

$pi = 3.14159265358979
$x = sin($pi / 4) ;returns 0.707106781186547 which you should recognize as sqrt(2)/2
$degToRad = $pi / 180
$y = Sin(90 * $degToRad) ;sine of 90°