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Navigationmedium#210

The length of one degree of longitude at 60°N is approximately:

A

60 NM

B

15 NM

C

45 NM

D

30 NM

Correct

Explanation

Departure = 60 × cos(latitude) = 60 × cos(60°) = 60 × 0.5 = 30 NM per degree of longitude at 60°N.

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