asin
PHP 4, PHP 5, PHP 7, PHP 8
asin - Arc sine
asin(
float$num ): float
Returns the arc sine of num in radians. asin is the inverse function of sin, which means that a==sin(asin(a)) for every value of a that is within asin's range.
Parameters
- num
-
The argument to process
Return Values
The arc sine of num in radians