No the arcs cannot be the course of the aircraft.
The sat cannot generate a range vector from a simple vhf signal.
>>No the arcs cannot be the course of the aircraft.<<
No one arguing with you on this has said that the arcs are used to determine the course of the aircraft.
Although I did say that you can infer from the 7:11 and 8:11 arcs at least some information on general direction during that hour.
Breaking News: Speed x Time = Distance