1.

The angle of elevation of an aeroplane from a point on the ground is 45∘. After a flight of 15 seconds, the angle of elevation changes to 30∘. If the aeroplane is flying at a height of 3000 m, then find the speed of the plane.(Take √3=1.732)

Answer»

The angle of elevation of an aeroplane from a point on the ground is 45. After a flight of 15 seconds, the angle of elevation changes to 30. If the aeroplane is flying at a height of 3000 m, then find the speed of the plane.



(Take 3=1.732)





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