Calculating tracks and distances between two not so random points
So now that you know that these questions are not random at all but specifically crafted for the ATPL exam-database it is time to show you the system.
To start your analysis, ask yourself:
Are A and B on the same meridian?
A: 40N 120E
B: 10N 120E
–> Yes. They are on the same meridian because they have the same longitude (120E).
– Great Circle distance = Change of latitude x 60 NM (Dis = chLAT x 60)
– The track from A to B is either 360 or 180 via the meridian.
Remember this one from the introduction?
A and B are on the meridian of 180 E/W.
They are 9 degrees apart (58S – 49S) = 9 x 60 = 540 nautical miles. –> D.
You answered C?
The question was how many kilometers…
And by the way, the track is 180.