Inverse secant in degrees
returns the
inverse secant (sec-1) of the elements of
Y
= asecd(X
)X
in degrees. The function accepts both real and complex inputs.
For real values of X
in the intervals [-∞, -1]
and [1, ∞], asecd(X)
returns values in the interval
[0, 180].
For real values of X
in the interval (-1, 1) and
for complex values of X
,
asecd(X)
returns complex values.