Can anybody help me in solving the following questions:
1)A great circle track joins position A (59° S 141° W) and B (61° S 148° W). What is the difference between the great circle track at A and B?
A) It increases by 3° .
B) It decreases by 3° .
C) It decreases by 6° .
D) It increases by 6° .
2)Given: value for the ellipticity of the Earth is 1/297. Earths semi-major axis, as measured at the equator, equals 6378.4 km. What is the semi-minor axis (km) of the earth at the axis of the Poles?
A) 6 367.0
B) 6 399.9
C) 6 378.4
D) 6 356.9
3)What is the initial great circle direction from 45° N 14° 12W to 45° N 12° 48E?
A) 270° (M)
B) 80,4° (T)
C) 86,5° (T)
D) 090° (M)