EASA NAV(A)basic
What is the distance between 150°E and 151°E along the equator?
Answer
60 NM
Explanation
At the equator, one degree of longitude spans approximately 60 NM, so the one-degree separation is about 60 NM. At other latitudes, this distance is smaller by the cosine of latitude. **Key takeaway:** Longitude spacing is greatest at the equator. **Glossary:** **Longitude**: Angular distance east or west of the prime meridian; **equator**: The zero-degree latitude circle.
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