While on a hiking trip in Algonquin Park, two hikers separate from their group and each becomes lost. Both hikers go to wide open clearings where aircraft can see them. After several hours, the larger group contacts the park rangers to tell them of the lost hikers. A rescue helicopter, at an altitude of 200 m, spots both hikers at the same time. One is at an angle of depression of and a bearing of . The other is at an angle of depression of and a bearing of. How far apart are they?