(PHP 4, PHP 5, PHP 7)
sin — Sine
$arg
) : float
sin() returns the sine of the arg
parameter. The arg parameter is in radians.
argA value in radians
The sine of arg
Example #1 sin() example
<?php
// Precision depends on your precision directive
echo sin(deg2rad(60)); // 0.866025403 ...
echo sin(60); // -0.304810621 ...
?>