\documentclass[border=3mm]{standalone}
\usepackage{pgfplots}
\pgfplotsset{compat=1.16}
\begin{document}
\begin{tikzpicture}
\begin{axis}[width=9cm,height=4cm,
axis lines = middle,
grid=both,
minor tick num=5,
ticklabel style={fill=white,font=\scriptsize, inner sep=1pt},
xmin=-365, xmax=365,
xtick={-360,-270,-180,-90, 0, 90, 180, 270,360},
xticklabels={ $-2\pi$,$-3\pi/2$,$-\pi$, $-\pi/2$, 0, $\pi/2$, $\pi$,$3\pi/2$,$2\pi$ },
ymin=-2, ymax=2,
ytick={-2,-1,...,2},
legend style={draw=none,fill=none, font=\scriptsize,