Hover or tap underlined Spanish terms to see their translation and exam tip.
Calcular el rumbo inicial ortodrómico (Ri) para navegar de la forma más efectiva desde el punto A de salida (latitud: 32º 39 ´ N Longitud: 117º 17´ W) hasta el punto B de llegada (latitud: 34º 36`N L:139º 58` E).Calculate the initial great circle course (Ri) to sail most effectively from departure point A (latitude: 32º 39´ N Longitude: 117º 17´ W) to arrival point B (latitude: 34º 36`N L:139º 58` E).
Show the answer
Correct answer: a) Ri= 305.6º
Why it is correct
The short way goes west: initial course 305.6º.
Why the others are not
- b) 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 · 3ª convocatoria · CY Tipo 1 · question 19 Official paper · Official answer key
Pending instructor review. Machine translation, not reviewed.