2. Given a mean earth radius of 20,906,000 ft, and an observation latitude of N 47 degrees, what is the arc distance of one second of longitude and one second of latitude?

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2. Given a mean earth radius of 20,906,000 ft, and an observation latitude of N 47 degrees, what is
the arc distance of one second of longitude and one second of latitude?
Transcribed Image Text:2. Given a mean earth radius of 20,906,000 ft, and an observation latitude of N 47 degrees, what is the arc distance of one second of longitude and one second of latitude?
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