OpenStax, Algebra and Trigonometry 2e §7.1 Angles · Exercise 68 · Trigonometry · Angle measure
Angles · Exercise 68
Two cities have the same longitude. The latitude of city A is 9 degrees north and the latitude of city B is 30 degrees north. Assume the radius of the earth is 3960 miles. Find the distance between the two cities.
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OpenStax, Algebra and Trigonometry 2e · §7.1 Angles · Exercise 68
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