答案1
作为纯tikz
图片:
\documentclass[tikz, border=10pt]{standalone}
\usetikzlibrary{backgrounds}
\begin{document}
\begin{tikzpicture}
% axis
\draw[->] (-3,0.0) -- (3.5,0) node[below left] {$x$};
\draw[->] (0,-0.5) -- (0.0,3) node[below left] {$y$};
\draw (-5:2) arc (-5:185:2);
% ticks
\foreach \angle in {90, 60, ...,-90}
\draw (90+\angle:1.9) -- (90+\angle:2)
++ (90+\angle:0.4)
node[fill=white, font=\footnotesize, inner sep=1pt] {$\angle$};
% sectors
\begin{scope}[on background layer]
\fill[yellow] (0,0) -- (135:2) arc(135:60:2) -- cycle;
\fill[orange] (0,0) -- (105:2) arc(105:75:2) -- cycle;
\end{scope}
\end{tikzpicture}
\end{document}