It works because a nautical mile is based on a degree of latitude, and the Earth (e) is a circle.
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Knot is just nautical mile per hour, so it can be simplified so:
π miles = e nautical miles
It works because a nautical mile is based on a degree of latitude, and the Earth (e) is a circle.
Knot is just nautical mile per hour, so it can be simplified so:
π miles = e nautical miles
