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An aircraft departs a point 04°00’N, 030°00’W and flies 600 NM south, followed by 600 NM east, then 600 NM north, then 600 NM west.

What is its final position?

  • A
    03°58’N, 030°02’W
  • B
    04°00’N, 029°58’W
  • C
    04°00’N, 030°00’W
  • D
    04°00’N, 030°02’W

From 4N 30W going south by 600nm (10 deg) will end up at 6S 30W

From 6S 30W going east by 600nm (long change = 600/cos6 = 10.06 deg) will end up at 6S 19.94W

From 6S 19.94W going north by 600nm (10 deg) will end up at 4N 19.94W

From 4N 19.94W going west by 600nm (long change = 600/cos4 = 10.03 deg) will end up at 4N 29.97W or 4N 29°58'W

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