%%
%% The LaTeX Companion, 3ed
%%
%% Example 8-5-9 on page I-637 in "Basic objects".
%%
%% Copyright (C) 2022 Frank Mittelbach
%%
%% It may be distributed and/or modified under the conditions
%% of the LaTeX Project Public License, either version 1.3c
%% of this license or (at your option) any later version.
%%
%% See https://www.latex-project.org/lppl.txt for details.
%%

\documentclass{tlc3exa}
\pagestyle{empty}
\setcounter{page}{6}
\setlength\textwidth{111.0pt}

%StartShownPreambleCommands
\usepackage{tikz}
%StopShownPreambleCommands

\begin{document}
\tikz \draw[scale=0.25,domain=-3.141:3.141,smooth,variable=\t]
       plot ({\t*sin(\t r)},{\t*cos(\t r)});
\quad
\tikz \draw[domain=0:360,samples=10,variable=\t]
       plot ({sin(\t)},{cos(\t)});
\end{document}