Hover or tap underlined Spanish terms to see their translation and exam tip.
Calcular el Rumbo Inicial Ortodrómico para navegar de la forma más efectiva desde Tokio (latitud: 35º 25,0’N; Longitud: 139º 46,0’E) hasta Lima (latitud: 10º 16,3’S y Longitud: 077º 53,0’W).Calculate the Initial Great Circle Course to sail most effectively from Tokyo (latitude: 35º 25.0’N; Longitude: 139º 46.0’E) to Lima (latitude: 10º 16.3’S and Longitude: 077º 53.0’W).
Show the answer
Correct answer: b) Ri=063º
Why it is correct
The short way goes east across the 180º meridian: initial course 063º.
Why the others are not
- a) It does not match the working.
- c) It does not match the working.
- d) It does not match the working.
How to work it out in the exam
- tan R = sin ΔL / (cos l1 tan l2 − sin l1 cos ΔL).
- Convert the result to circular by the direction of travel.
Where this question comes from
- Región de Murcia · 2025 · 2ª convocatoria · CY Tipo 1 · question 20 Official paper · Official answer key
Pending instructor review. Machine translation, not reviewed.