I've searched many places and I can't find something close enough to my situation. Basically, I searched on other posts suggesting to use tabu instead of tabular because I would have to use \(content\) everywhere I have mathematical expressions.
How do I add equal spacing so that I can read the text.
Second, I want to split the cell above sin diagonally so that I can insert text that describes the first row and column. Thanks!
\documentclass{article}
\usepackage{mathtools}
\usepackage{tabu}
\newcommand{\degree}{^\circ}
\begin{document}
\(
\begin{tabu}{|c|c|c|c|}
& 30\degree & 45\degree & 60\degree \\ \hline
\sin \theta & \dfrac{1}{2} & \dfrac{\sqrt{2}}{2} & \dfrac{\sqrt{3}}{2} \\ \hline
\cos \theta & \dfrac{\sqrt{3}}{2} & \dfrac{\sqrt{2}}{2} & \dfrac{1}{2} \\ \hline
\tan \theta & \dfrac{\sqrt{3}}{3} & 1\vphantom{\dfrac{\sqrt{2}}{2}} & \dfrac{1}{2} \\
\end{tabu}
\)
\end{document}
