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

Día 15 de noviembre de 2021, el Capitán estudia la derrota ortodrómica desde el punto -A- de salida 27º 39,3´N – 015º 34,8´W y el punto -B- de llegada 18º 25,1´N – 064º 20,1´W y calcula la distancia ortodrómica:15 November 2021, the Master studies the great circle route from departure point A 27º 39.3´N – 015º 34.8´W to arrival point B 18º 25.1´N – 064º 20.1´W and works out the distance:

Show the answer

Correct answer: c) 2731´

Why it is correct

ΔLong = 48º 45.3′. The formula gives about 2731 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.