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. Beijing, China, and Philadelphia, Pennsylvania are both at approximately 40N latitude. Beijing's longitude is 11628E, while Philadelphia's longitude is 759'W. (a) What is

. Beijing, China, and Philadelphia, Pennsylvania are both at approximately 40N latitude. Beijing's longitude is 11628E, while Philadelphia's longitude is 759'W. (a) What is the great circle distance between these cities? (b) If a person were to fly due east from Beijing to Philadelphia, what distance would be traveled? (c) If a person were to fly due west from Beijing to Philadelphia, what distance would be traveled?

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