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How to write degree symbol in LaTex ? It exists two methodes one using circ command, another one using package siunitix.
In geometry and trigonometry, a right angle is an angle of exactly $90^\circ$
In geometry and trigonometry, a right angle is an angle of exactly $90^\circ$
Personally, i prefer the siunitx package:
\documentclass[12pt,a4paper]{article}
\usepackage[utf8]{inputenc}
\usepackage{siunitx}
\begin{document}
Choose/Choisissez:
$\alpha=\ang{30} \Rightarrow$ package siunitx
$\alpha=30^\circ \Rightarrow$ defaut/default
\end{document}