CBSE Class 10 Maths (Standard) 2015 · Paper 30/1 · Question 13
The angle of elevation of an aeroplane from a point on the ground is . After a flight of 15 seconds, the angle of elevation changes to . If the aeroplane is flying at a constant height of m, find the speed of the plane in km/hr.
Answer
The speed of the aeroplane is km/hr.
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