A marine surveyor uses a rangefinder and a compass to locate a ship and an island in the vicinity of the coast on which she stands. The rangefinder indicates that the island is 379 ft from her position and the ship is 487 ft from her position. Using thecompass, she finds that theship's azimuth(the direction measured as an angle fromnorth) is 318 and that of the island is 47. What is the distance between the ship and theisland?