12. What is the distance along the equator between 150°E and 151°E?
Answer
60 NM
Explanation
At the equator, one degree of longitude spans approximately one degree of latitude in distance, or **60 NM**. Away from the equator, longitude distance decreases with latitude. **Key takeaway:** One longitude degree is 60 NM only at the equator. **Glossary:** Equator: zero-degree latitude parallel.