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Where Can I Find The Distance Between Longitudes From The Equator To 60 Degrees North?

I would like to know the distances between each degree of longitude at each degree of latitude. For example: At the equator, the distance between each degree of longitude is 60 nautical miles. At 30 degrees latitude, it is about 52 nautical miles. How much at 31 degrees north latitude? 32 degrees, and so on. The change is not linear.

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    The distance covered by one degree of longitude at a given latitude is very nearly 60 nm * cosine[latitude]. A table of cosines can be found here.

    Because the earth is not a sphere, this approximation is in error by perhaps as much as .08 nm at 55 degrees latitude. The error is smaller elsewhere. Look here for more information.

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    Oddman 

    answered 1 year ago

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