% This file was created by matlab2tikz v0.3.3.
% Copyright (c) 2008--2013, Nico Schlmer <nico.schloemer@gmail.com>
% All rights reserved.
% 
% 
% 

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\addlegendentry{$\text{tau}_\text{c}\text{ = 2*theta}$};

\end{axis}
\end{tikzpicture}%