I would like to draw a light ray which makes an angle with the horizontal axis in Inkscape. Using the freehand drawing, I drew the line horizontally first (placing a node in the middle for the arrow) and then rotated the whole thing to the desired angle. However, I failed to rotate the marker arrow correctly (as seen in the figure below). I want it to have the same orientation as the line itself. How can I do that?
As a note: I'm sure that the line and the arrow are grouped together.