I am trying to draw a figure similar to this one
This is the code for that figure that I've done so far
\documentclass{article}
\usepackage[utf8]{inputenc}
\usepackage{tikz}
\usepackage{graphicx}
\usepackage{amsmath}
\usepackage{amssymb}
\usepackage{xcolor}
\begin{document}
\begin{tikzpicture}
%coordinate system
\draw[thick,->] (0,-5) -- (0,5)node[above left]{$y$};
\draw[thick,->] (-5,0) -- (5,0)node[below right]{$x$};
%circle
\draw (4,0) arc (0:360:4)node[ below]{$ $};
%dots % their lines
\draw[red] (0,0) -- (2.8,2.9) node[circle,red,fill,inner sep=3pt]{} node[above right]{$Q=(\cos v,\sin v)$};
\draw[blue] (0,0) -- (-2.8,2.9) node[circle,blue,fill,inner sep=3pt]{} node[above left]{$P=(\cos u,\sin u)$};
%line joining both dots
\draw[magenta] (-2.8,2.9) -- (2.8,2.9) node[midway, above left ]{$d$};
%angles
\draw (2,0) arc (0:134:2)node[midway,above right]{$u $};
\draw (1,0) arc (0:45:1)node[midway,above right]{$v $};
\end{tikzpicture}
\end{document}
How can I draw the arrows for the direction of the angles?
And also how can I add the label for the circle, it's supposed to be a unit circle, I wanted to draw an arrow indicating that the equation $x^2+y^2=1$ is that circle.
Could someone please help?
Thank you in advance.
Edit.
The label for the circle without arrow:
%circle
\draw (4,0) arc (0:360:4)node[very near end, below right]{$x^2+y^2=1$};
Edit2.
So far, the image is this, which looks decent :) I think.
\draw[->] (2,0) arc...
and\draw[->] (1,0) arc...
. If it is clockwise, the change to[<-]
. Finally if it is in both directions, write[<->]
.