The problem involves calculating distances and times for an aeroplane traveling between several towns on Earth. We will use the Earth's radius R_E = 6370 km where necessary, and the defini

Here's the solution to question 31. The problem involves calculating distances and times for an aeroplane traveling between several towns on Earth. We will use the Earth's radius R_E = 6370 \, km where necessary, and the definition of a nautical mile (1 NM = 1 minute of arc along a great circle). a) Calculate the distance from A to B in nautical miles. Town A: L_A = 72^ N, _A = 60^ W Town B: L_B = 55^ N, _B = 20^ E The shortest route is along a great circle. The angular separation