cos
(PHP 4, PHP 5, PHP 7, PHP 8)
cos — Cosine
Description
cos(float $num): float
cos() returns the cosine of the num parameter. The num parameter is in radians.
Parameters
-
num -
An angle in radians
Return Values
The cosine of num
Examples
Example #1 cos() example
<?php echo cos(M_PI); // -1 ?>
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https://www.php.net/manual/en/function.cos.php
