29. You are steaming on a course of 198°T at 18.5 knots. At 0316 you observe a lighthouse bearing 235°T. At 0348 the lighthouse bears 259°T. What is your distance off at the second bearing?

Applying the law of sines to the triangle formed by the two bearings and the distance traveled between them yields a distance of approximately 14.8 nautical miles from the lighthouse at the second bearing.