How far apart two cities in equator whose longitude is 10°E 50°W
your two cities, 60° apart, are 1/6 the circumference of the earth apart.
C = 2πR
so look up the radius of the earth.
or, even easier, look up the circumference.
miles, or km?
C = 2πR
so look up the radius of the earth.
or, even easier, look up the circumference.
miles, or km?