1.

An aeroplane when flying at a height of 3125 m from the ground passes vertically below another plane at an instant when the angle of elevation of the two planes from the same point on the ground are 30 and 60 respectively. The distance between the two planes at that instant is

A. 6520 m
B. 6000 m
C. 5000 m
D. 6250 m
Answer» E.


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