Use Problem 40 to find the great-circle distance between each pair of places. a. New York and

Question:

Use Problem 40 to find the great-circle distance between each pair of places.
a. New York and Greenwich
b. St. Paul and Turin
c. Turin and the South Pole (use al = a2)
d. New York and Cape Town (18.4° E, 33.9° S)
e. Two points on the equator with longitudes 100° E and 80° W, respectively
cos γ = cos(α1 - α2) cos β1 cos β2 + sin β1 sin β2