acos

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

    acos — Arc cosine

    Açıklama

    acos(float$num): float

    Returns the arc cosine of num in radians. acos() is the inverse function of cos(), which means that $num == cos(acos($num)) for every value of num that is in the domain of acos().

    Bağımsız Değişkenler

    num

    The argument to process

    Dönen Değerler

    The arc cosine of num in radians.

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