degree in latex code example

Example 1: latex degree symbol

% In preamble:
\usepackage{gensymb}
...
Draw a 45 $\degree$ angle.

Example 2: degree symbol latex

$90^{\circ}$

Example 3: degrees latex

\documentclass{report}
\usepackage{siunitx}
\begin{document}
The angle is \ang{30}.
\end{document}