\documentclass{report}

\usepackage{rotating}

\begin{document}


\begin{table}
\begin{tabular}{|c|c|}
\hline
\rotatebox{120}{$\Rightarrow$} & \rotatebox{30}{$\Rightarrow$} \\\hline
\rotatebox{180}{$\Rightarrow$} & \rotatebox{230}{$\Rightarrow$} \\\hline
\end{tabular}
\end{table}

\end{document}