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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