% ASECD ASECD Inverse Secant Degrees Function
% 
% Usage
% 
% Computes the inverse secant of the argument, but returns
% the argument in degrees instead of radians (as is the case
% for asec. The syntax for its use is
% 
%    y = asecd(x)
% 
function y = asecd(x)
  if (nargin == 0 || ~isnumeric(x))
    error('asecd expects a numeric input');
  end
  y = rad2deg(asec(x));
