An eagle is flying at a constant height of 1000√3 m from the ground level.A boy standing on the ground observes the angle of elevation of the eagle as 45°.After a flight of 15 seconds its angle of elevation at the same point,is observed to be 30°.Find the speed of the eagle in km/h.
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From a point on the ground, the angle of elevation at an instant was observed to be 45 degree. After 20 sec. , the angle ...
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