An aeroplane is flying horizontally at a height of 1.8 km above the gr – McqOptions

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1.	An aeroplane is flying horizontally at a height of 1.8 km above the ground. The angle of elevation of a plane from point X is 60° and after 20 seconds, its angle of elevation from X becomes 30°. If point X is on the ground, then what is the speed (in km/hr) of the aeroplane?
A.	216√3
B.	105√3
C.	201√3
D.	305√3
Answer» B. 105√3

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