Now, there are two ways to geocode latitude and longitude from an Excel spreadsheet: the hard way and the easy way. Geocoding is the conversion of street addresses to latitude and longitude data that can be mapped. The decimals are pretty much useless since you know it’s an approximation. Figure: The 4476 number is the distance in Nautical Miles. Figure: You only have to enter that formula into EXCEL ONE time. Even if you were to substitute it with the radius of a sphere, assuming the Earth is spherical, at 3437.7468 NM, you will not be near the real, accurate distance. That three thousand number, in the end, is the radius of Earth, in, Nautical Miles. Now that you have the latitude and longitude values in decimals, you just face the equation for the nautical miles between Timbuktu and Casablanca, noted underneath.
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