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Decimal degrees and N/S/E/Wâ Latitude and longitude are represented as decimal numbers followed by a letter indicating whether the latitude is north (N) or south (S) of the equator and the longitude is east (E) or west (W) of the prime meridian; for example, 37.68455&#176N; 97.34110&#176W;.
If you are exactly on the equator, you can just multiply the change in latitude by 60 and get the answer. One degree of latitude is 60 nautical miles. So the distance between North pole and equator is; * 90 (the amount of degrees between them) x 60 = 5400 nm (which is like 10000 km)