Asked by Anonymous

An airplane is flying between two towns at an altitude of 8km. One town is to the west of the plane and the other is to the east. The angle of depression to one town in de34grees and to the other town is 49degrees. What is the distance between the two towns
Answered by Steve
If the point directly below the plane is P, and the two towns are W and E, then their separation is

8cot34° + 8cot49°
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