\documentclass[11pt,twoside]{article}
\usepackage{amsmath,amsthm,amssymb}
\usepackage{rotating}
\begin{document}
\begin{sidewaystable}
\centering
\caption{table1}
\begin{tabular}{cc}
\hline
a   & b   \\
c   & d   \\
\end{tabular}
\end{sidewaystable}
\newpage
\begin{sidewaystable}
\centering
\caption{table2}
\begin{tabular}{cc}
\hline
a   & b   \\
c   & d   \\
\end{tabular}
\end{sidewaystable}
\end{document}