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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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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. |
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