\setlength{\unitlength}{2cm}%

\highestlabel{\normalfont\normalsize$3\pi/2$}
\begin{center}
\begin{Picture}(-3.5,-1.5)(3.5,1.5)
{\referencesystem(0,0)(\numberHALFPI,0)(0,1)
\makenolabels
\cartesianaxes(-2.2,-1.2)(2.2,1.2)}
\printylabels{-1}{1}{1}
\printxlabel{-\numberPI}{-\pi}
\printxlabel{-\numberHALFPI}{-\pi/2}
\printxlabel{\numberHALFPI}{\pi/2}
\printxlabel{\numberPI}{\pi}
\pictcolor{red}
   \PlotFunction[24]{\SINfunction}{-\numberPI}{\numberPI}
\renewcommand{\axeslabelcolor}{red}
\printxlabel{\numberSIXTHPI}{\pi/6}
\printylabel{0.5}{1/2}
\Polyline(\numberSIXTHPI,0)(\numberSIXTHPI,0.5)(0,0.5)
\end{Picture}
\end{center}
