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Home > PC3 > Chapter 13 > Lesson 13.2.1 > Problem 13-67


Two submarines left the Long Beach Shipyard, one at a speed of knots and the other at a speed of knots. Their courses diverged by . After hours, how far apart are they? (Note: A knot is a measure of speed defined as one nautical mile per hour. A nautical mile is meters or kilometers.)

Draw and label a diagram. Note that the values given are speeds, not distances.

Once you have calculated the distances the submarines have each traveled after hours, use the Law of Cosines.