An aeroplane when flying at a height of 5000 m from the ground passes vertically above another aeroplane at an instant, when the angles of elevation of the two aeroplanes from the same point on the ground are 60° and 45° respectively. The vertical distance between the aeroplanes at that instant is

An aeroplane when flying at a height of 5000 m from the ground passes

1.	An aeroplane when flying at a height of 5000 m from the ground passes vertically above another aeroplane at an instant, when the angles of elevation of the two aeroplanes from the same point on the ground are 60° and 45° respectively. The vertical distance between the aeroplanes at that instant is
A.	5000(√3 – 1) m
B.	5000(3 – √3) m
C.	5000{1 – (1 / √3)} m
D.	4500 m
Answer» D. 4500 m

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