acoshasin
(PHP 4, PHP 5)
asin — Arc sine
Popis
float asin
( float $arg
)
Returns the arc sine of arg in radians. asin() is the complementary function of sin(), which means that a==sin(asin(a)) for every value of a that is within asin()'s range.
Parametre
- arg
-
The argument to process
Vrátené hodnoty
The arc sine of arg in radians
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