Two points P and Q are on longitude 67 W Their ... - WAEC Mathematics 1997 Question
Two points P and Q are on longitude 67°W. Their latitudes differ by 90°. Calculate their distance apart in terms of π. (Take radius of the earth = 6400km).
A
6400πkm
B
6400km/π
C
3200πkm
D
3200km
correct option: c
P(67°W, 0°N)
Q(67°W 90°N), R = 6400km
Distance PQ =
90/360 x 2 x 6400 π
= 3200πkm
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