Hover or tap underlined Spanish terms to see their translation and exam tip.
HCG= 0600, al sur de Cabo de Gata, situados en el punto -A- 36º 20,0′N – 002º 17,7′W, el Capitán calcula la distancia ortodrómica al punto -B- en Sapri (costa de Amalfi en Salerno Italia) situado en 39º 53,0′N – 015º 34,8′E:GCT = 0600, south of Cabo de Gata, at point -A- 36º 20.0′N – 002º 17.7′W, the Captain works out the great circle distance to point -B- at Sapri (Amalfi coast, Salerno, Italy) at 39º 53.0′N – 015º 34.8′E:
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Correct answer: b) 868.7′
Why it is correct
cos D = sin l1 sin l2 + cos l1 cos l2 cos ΔL, with ΔL = 17º 52.5′, since longitudes of opposite name add. D = 14.48º, about 868.7 miles.
Why the others are not
- a) The formula does not give this value.
- c) The formula does not give this value.
- d) The formula does not give this value.
How to work it out in the exam
- East and west longitudes: add them.
- Multiply D by 60.
Where this question comes from
- Región de Murcia · 2022 · 2ª convocatoria · CY Tipo 1 · question 11 Official paper · Official answer key
Pending instructor review. Machine translation, not reviewed.