asin

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

asinArc sine

Опис

asin(float $num): float

Returns the arc sine of num in radians. asin() is the inverse function of sin(), which means that $num == sin(asin($num)) for every value of num that is in the domain of asin().

Параметри

num

The argument to process

Значення, що повертаються

The arc sine of num in radians

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