Navigation PPLbasic
Arrange the steps for finding the north–south distance from one latitude to another.
Answer
Find the absolute difference between the two latitudes., Convert the latitude difference to degrees and minutes., Multiply the difference in minutes by approximately 1 NM per minute., State the resulting distance in nautical miles.
Explanation
First determine the absolute latitude difference, then express it in minutes. Each minute of latitude is approximately one nautical mile, so the minute value gives the distance directly in NM. For example, a difference of $1^\circ 10'$ is 70 minutes, or about 70 NM.\n\n**Key takeaway:** Latitude minutes provide a direct approximate distance in NM.\n\n**Glossary:** **Minute of latitude**: one-sixtieth of a degree of latitude.
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