PHP 8.1.0 Released!

cos

(PHP 4, PHP 5, PHP 7, PHP 8)

cosCosine

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

?>

See Also

add a note add a note

User Contributed Notes

There are no user contributed notes for this page.
To Top