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%% 
%%  A DANTE-Edition example
%% 
%%  Example 02-20-1 on page 92.
%% 
%%  Copyright (C) 2010 Herbert Voss
%% 
%%  It may be distributed and/or modified under the conditions
%%  of the LaTeX Project Public License, either version 1.3
%%  of this license or (at your option) any later version.
%% 
%%  See http://www.latex-project.org/lppl.txt for details.
%% 
%% 
%% ==== 
% Show page(s) 1
%% 
\documentclass[]{article}
\pagestyle{empty}
\setlength\textwidth{201.70511pt}
\setlength\parindent{0pt}
\usepackage[english]{babel}
\usepackage[utf8]{inputenc}

\usepackage{threeparttable,array,booktabs,calc}

\begin{document}
\begin{threeparttable}
\caption{Summary of the signs for the most important trigonometric
    functions.\tnote{1}}
\begin{tabular}{@{}rc*{6}{>{$}c<{$}}}\toprule
\emph{quadrant} & angle & \sin\tnote{a} & \cos\tnote{a} & \tan\tnote{b}
 & \mathrm{cot}\tnote{b} & \mathrm{sec}\tnote{c} & \mathrm{csec}\tnote{c} \\\midrule
   I & $0^\circ$ to $90^\circ$    & + & + & + & + & + & + \\
  II & $90^\circ$ to $180^\circ$  & + & - & - & - & - & + \\
 III & $180^\circ$ to $270^\circ$ & - & - & + & + & - & - \\
  IV & $270^\circ$ to $360^\circ$ & - & + & - & - & + & - \\\bottomrule
\end{tabular}
\begin{tablenotes}
  \item[1] Conversion to radian is easy.
  \begingroup% keep local
  \renewcommand\tnote[1]{\normalsize\bfseries#1}
  \item[range:] ~ \endgroup
  \item[a] \makebox[1.8em][r]{$-1$}      to $+1$
  \item[b] \makebox[1.8em][r]{$-\infty$} to $+\infty$
  \item[c] \makebox[1.8em][r]{$-\infty$} to $-1$ and $+1$ to $+\infty$
\end{tablenotes}
\end{threeparttable}
\end{document}