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390 - ATPL - On an oblate spheroid representing the Earth's shape:

Question 390 - General Navigation - ATPL - Airline Transport Pilot license

1 minute of arc along the meridian at low latitudes measures a greater distance than 1 minute of arc along the meridian at high latitudes.
1 minute of arc along the meridian at 0°N/S measures the same distance as 1 minute of arc at 90°N/S.
1 minute of arc along the equator measures the same distance as 1 minute of arc along the meridian at a latitude of 45°N/S.
1 minute of arc along the equator measures a greater distance than 1 minute of arc along the meridian at a latitude of 45°N/S.

Training tests and timed exam simulations ATPL - Airline Transport Pilot license