Question 1898Navigation General

The correct answer is C) 23°E. A great circle is the shortest distance between two points on a sphere, and it will cross the equator at 180 degrees from the initial crossing point. Since the great circle crosses the equator at 157°W, it will also cross the equator at 23°E, which is 180 degrees from 157°W. The other options are incorrect because: A) 57°W is not 180 degrees from 157°W. B) 57°E is not 180 degrees from 157°W. D) 157°E is the same longitude as the initial crossing, not the second crossing point.