cos

(PHP 4, PHP 5, PHP 7)

cos — Cosine

Description

cos ( float $arg ) : float

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

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Licensed under the Creative Commons Attribution License v3.0 or later.
https://www.php.net/manual/en/function.cos.php