Posted by **PVC** on Saturday, January 26, 2013 at 3:03pm.

In this diagram, one person is standing at point A, one person is at point B, and both are looking at a helicopter at point C. The helicopter is 1000 feet above the ground on which the two people are standing.

A. If the angle of elevation at point A is 60 degrees and the angle of elevation at point B is 20 degrees, approximately how many feet apart are A& B?

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