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A aeroplane is flying horizontally with speed of 432 km/hr at height h meter from ground. Its angle of elevation from a point on ground is 60°. After 20 sec its angle of elevation from same point is 30° then the height 'h' is equal to 

\(A) 1200\sqrt3\)

\(B) 600\sqrt3\) 

\(C) 1800\sqrt3\) 

\(D) 1000\sqrt3\)

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Best answer

The correct answer is option A)1200\(\sqrt3\) 

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