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