Two cities lying on the equator are sepa...

Two cities lying on the equator are separated by a distance of 120 miles. What is the longitudinal difference between them ? Assume earth's radius of equator=4000 miles.

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`alpha=d/R radians`
`=120/4000` miles radian
=0.03 radians
`=0.03*180/pi`degree
`=1.72^0`.

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