asin [PHP Script]

Syntax

float asin(float $val)

(PHP 4, PHP 5)

$val	Value to compute the arc sine for.
RETURNS	Computes the trigonometry function `arc sine` for the degree in radians ($val).

This function computes the arc sine for the argument $val which is the degree in radians.

// compute the arc sine for 1.4 radians
echo 'asin(1.4) = ' . asin(1.4);