% !TEX TS-program = XeLaTeX
% Commands for running this example:
% 	 xelatex sin1
% End of Commands
\documentclass[a4paper,12pt]{article}
\pagestyle{empty}
\usepackage{pstricks,pst-plot,ifthen,calc}
%\usepackage{xepersian}

\begin{document}

\begin{pspicture}(-0.5,-1.25)(10,1.25)
  \psaxes[xunit=1.570796327,showorigin=false]{->}(0,0)(-0.5,-1.25)(6.4,1.25)
  \psplot[linewidth=1.5pt]{0}{9.424777961}{x RadtoDeg sin}
\uput[0](2,1.1){$y=\sin x$}
\end{pspicture}

\end{document}