\input{preamble-standalone.ltx}
\begin{document}

% Ex. No. 53 (Section  7.0.10 : Options \tkzname{frac} and \tkzname{trig} with \tkzcname{tkzGrid})

\begin{tikzpicture}
   \tkzInit[xmax=9,xstep=3,ymax=4]
   \tkzGrid[xstep=1,ystep=pi/2,sub,
            subxstep=1,subystep=pi/4]
   \tkzLabelX[label=$t$,orig=false,frac=3,
            below=6pt,font=\scriptsize]
   \tkzLabelY[trig=2,font=\scriptsize]
\end{tikzpicture}

\end{document}