(PHP 4, PHP 5, PHP 7, PHP 8)
sin —Sine
sin() returns the sine of thenum parameter. Thenum parameter is in radians.
numA value in radians
The sine ofnum
Example #1sin() example
<?php
// Precision depends on your precision directive
echosin(deg2rad(60)),PHP_EOL;// 0.866025403 ...
echosin(60),PHP_EOL;// -0.304810621 ...
?>