\usepackage{adjustbox}
...
\begin{table}[t]
\begin{adjustbox}{angle=90, center}
\centering
\begin{tabular}{ccc}\hline
Methods & Time (Seconds) & Cost \\\hline
\hline
Method A & 10 & 100 \\ \hline
Method B & 11 & 120 \\ \hline
Method C & 12 & 130 \\ \hline
Method D & 13 & 140 \\ \hline
Method E & 14 & 150 \\ \hline
Method F & 15 & 150 \\ \hline
Method G & 16 & 160 \\ \hline
Method H & 17 & 170 \\ \hline
Method I & 18 & 180 \\ \hline
Method J & 19 & 190 \\ \hline
\hline
\end{tabular}
\end{adjustbox}
\caption{An example of vertical tables.}
\end{table}