Wie kann ich das angehen?
Hier das Minimalbeispiel:
\documentclass{article} \usepackage{pgfplots} \pgfplotsset{compat=1.15} \begin{document} \begin{tikzpicture}[scale=1,>=latex] \begin{axis}[ trig format plots=rad, axis equal, ymin=0, ymax = 250, xmin=0, xmax=200, hide axis ] \draw[blue, fill=blue] (60.46181719,163.8889268) circle [blue, radius=1]; \addplot [domain=0 : 0.125*pi*0.9, samples=200, black] ({sin(x)*(179-0.8*(1/(cos(4*x))-1))}, {cos(x)*(179-0.8*(1/(cos(4*x))-1))}); %Tangente \addplot[black, domain=50:80] {163.889 - 1.52393*(-60.4618 + x)}; %Orthogonale \addplot[black, domain=0:90] {163.889 - 0.656199*(60.4618 - x)}; %Gerade 22.5° \addplot[black, domain=0:80] {tan(pi/2-0.125*pi)*x}; \addplot [domain=0:2*pi, samples=50, red] ({70.6558+12.1928*cos(x)}, {170.578+12.1928*sin(x)}); \addplot [domain=1.18*pi:1.38*pi, samples=50, green] ({70.6558+12.1928*cos(x)}, {170.578+12.1928*sin(x)}); \draw (0,0) -- (0,179); \draw (0,0) -- (60.46181719,163.8889268); \draw[->] (30,100) arc (80:30:35); \end{axis} \end{tikzpicture} \end{document}