cos
cos
(PHP 4, PHP 5, PHP 7)
cos — Cosine
Description
float cos ( float $arg )
cos() returns the cosine of the arg parameter. The arg parameter is in radians.
Parameters
-
arg -
An angle in radians
Return Values
The cosine of arg
Examples
Example #1 cos() example
<?php echo cos(M_PI); // -1 ?>
See Also
© 1997–2017 The PHP Documentation Group
Licensed under the Creative Commons Attribution License v3.0 or later.
https://secure.php.net/manual/en/function.cos.php
