GCE Mathematics 1989 Question 9

Question 9

Latitude and Longitude

P and Q are two places on the same circle of latitude 79°S. P is on longitude 68°E while Q is on longitude 22°W. The angular distance between P and Q is

A.12°
B.45°
C.48°
D.90°
E.92°

Show the answer and explanation

Answer: D (90°)

Explanation

One longitude is east and the other west, so add them: 68° + 22° = 90°.