I need to draw this picture using TikZ:
Main ellipse can be drawn with:
\begin{tikzpicture}
\draw (0,0) ellipse [x radius = 3cm, y radius = 1 cm];
\end{tikzpicture}
Then to make dashed part of that ellipse \draw (x1,y1) arc [start angle=-120, end angle=-240, x radius=3cm, y radius=1 cm]
I need to know start point (x1,y1)
. OK, it can be computed from ellipse equation, but probably arc can be set different way? And the main difficulty for me is how to code that solid tilted up arc?
Many thanks in advance.