An aeroplane when flying at 2000m from the ground passes vertically above the helicopter at an instant when their angles of elevation from the same point on the ground are 60 degree and 30 degree.Find the vertical distance of the helicopter from the ground.

Asked by  | 31st Oct, 2013, 04:01: PM

Expert Answer:



Answered by  | 1st Nov, 2013, 04:59: PM

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