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A boat heading out to sea starts out at Point A, at a horizontal distance of 787
feet from a lighthouse/the shore. From that point, the boat's crew measures
the angle of elevation to the lighthouse's beacon-light from that point to be
13°. At some later time, the crew measures the angle of elevation from point
B to be 2°. Find the distance from point A to point B. Round your answer to
the nearest tenth of a foot if necessary.