Gdtyjr

How would you modify the following code so that I insert the arc indicated by the blue line in the diagram?
In the normal tikzpicture environment this seems to be quite straightforward, but I am unsure when it comes to graphs.

Thanks

documentclass[]article
usepackage[margin=0.5in]geometry
usepackagepgfplots
renewcommandthesectionarabicsection
usepackagemathtools
usepackagecancel
usepackagepgfplots
usepackageamsmath
newtheoremtheoremTHEOREM
newtheoremproofPROOF
usepackagetikz
usepackageamssymb
usetikzlibrarypatterns
usepackagefancyhdr
usepackagebigints
usepackagecolor
usepackagetcolorbox
usepackagecolor,xcolor
usepackagebooktabs,array
usepackagehyperref
usepackagegraphicx
usetikzlibraryarrows
usepackagepolynom
usepackagewallpaper
usetikzlibraryshapes.geometric
usepgfplotslibraryfillbetween
newenvironmenttightcenter
setlengthtopsep0pt
setlengthparskip0pt
begincenterendcenter
begindocument
begintikzpicture
beginaxis[
axis x line=middle, % put the x axis in the middle
axis y line=middle, % put the y axis in the middle
axis line style=thick,
axis line style=->, % arrows on the axis
xlabel=$x$, % default put x on x-axis
ylabel=$y$, % default put y on y-axis
ticks=none,
xmin=-7,xmax=7,
ymin=-7,ymax=7,
clip=false
]
%
draw[black,thick](axis cs:0,0) circle (1.7cm);
%
%
node [above] at (axis cs: +0.4,0)$O$;
node [left,scale=0.9] at (axis cs: -0.5,-0.4)$theta$;
%
node [left,scale=0.9] at (axis cs: -2.4,-3.4)$(x,y)$;
%node [left] at (axis cs: 0,+1.5)$1$;
%node [left] at (axis cs: 0,-5.5)$-5$;
draw[black,thick](axis cs:0,0) -- (axis cs:-2.4,0) -- (axis cs:-2.4,-2.95) --cycle;
draw[black,thick](axis cs:-2.4,0) rectangle (axis cs:-2,-0.4);
draw[fill=black](axis cs:-2.4,-2.97) circle (0.4mm);
%
draw [thick](axis cs:0.92,2) ++(0:1) arc (185:264:0.5);
%draw [thick](axis cs:2.18,0) ++(0:1) arc (0:95:0.5);
endaxis
endtikzpicture
enddocument