Two points P and Q are on longitude 67°W. Their latitudes differ by 90°. Calculate...

WAEC 1997

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
E. 3200km/π

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Correct Answer: Option C

Explanation

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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Two points P and Q are on longitude 67°W. Their latitudes differ by 90°. Calculate...

Correct Answer: Option C

Explanation

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