The table also shows that the linear distance separating each 1° of longitude decreases toward the poles. For example, at 30° latitude each degree of longitude is separated by slightly more than 96 km (nearly 60 miles), and at 60° latitude, the linear distance is reduced to approximately half that at the equator. For each of the following latitudes, determine the linear distance in kilometers and in miles for 15° of longitudinal arc (along a parallel):
a) 30° latitude
b) 40° latitude
c) 50° latitude
d) 60° latitude
km
a) 15° x 96.49 km = 1447 km
b) 15 x 85.40 km = 1281 km
c) 1075.50 km (15 x 71.70 km)
d) 837 km (15 x 55.8 km)
miles
a) 15° x 59.96 mi = 899 mi
b) 15 x 53.07 = 796 mi
c) 668.25 mi (15 x 44.55 mi)
d) 520.05 mi (15 x 34.67 mi)
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