\section{ASECD Inverse Secant Degrees Function}

\subsection{Usage}

Computes the inverse secant of the argument, but returns
the argument in degrees instead of radians (as is the case
for \verb|asec|. The syntax for its use is
\begin{verbatim}
   y = asecd(x)
\end{verbatim}
\subsection{Examples}

The inverse secant of \verb|2/sqrt(2)| should be 45 degrees:
\begin{verbatim}
--> asecd(2/sqrt(2))
ans = 
  <double>  - size: [1 1]
 45  

\end{verbatim}
and the inverse secant of \verb|2| should be 60 degrees:
\begin{verbatim}
--> asecd(2)
ans = 
  <double>  - size: [1 1]
 60.00000000000001  

\end{verbatim}
