cos

(PHP 4, PHP 5, PHP 7)

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

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