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Hover or tap underlined Spanish terms to see their translation and exam tip.

El 15 de Marzo del 2025 se sale de las coordenadas l: 43º 27`N L:008º 23`W con destino a un punto de coordenadas l:36º 54`N L: 075º 50´W. Calcular distancia ortodrómica.On 15 March 2025 we leave l: 43º 27`N L:008º 23`W for a point at l:36º 54`N L: 075º 50´W. Calculate the great circle distance.

Show the answer

Correct answer: c) D=3032.3 miles

Why it is correct

ΔLong = 67º 27′. The formula gives about 3032 miles.

Why the others are not

  • a) It does not match the working.
  • b) It does not match the working.
  • d) It does not match the working.

How to work it out in the exam

  1. cos D = sin l1 sin l2 + cos l1 cos l2 cos ΔL, with south latitude negative.
  2. Turn D into minutes: each minute is a mile.

Where this question comes from

Try it: Sight reduction

Pending instructor review. Machine translation, not reviewed.