Determine the great circle distance and initial course from LAT 35°17.6'N, LONG 144°23.0'E to LAT 47°36.0'N, LONG 124°22.0'W.

Correct Answer: Option D — 3931 miles, 048°T

Solve the spherical triangle formed by the two positions and the North Pole. Using the haversine formula or the law of cosines for sides, calculate the great circle distance. The initial course is found using the law of cosines for angles, resulting in 3931 miles and 048°T.