Two Cities $A$ And $B$ Lie on the Same Meridian, One Is Found At

question 113

Essay

Two cities, $A$ and $B$ lie on the same meridian, one is found at $20 ^ { \circ }$ S and the other at $27 ^ { \circ }$ S. Find the distance between these cities given that the circumference of the earth is $3960$ mi.

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