asin
asin
Arc sine
float **asin** float $num
Returns the arc sine of in radians.
is the inverse function of
, which means that
for every value of
that is in
the domain of .
num``asin``sin``$num == sin(asin($num))``num``asin
numThe argument to process
The arc sine of in radians
num
sin``asinh``acos``atan