Question
A boy standing on the ground, spots a balloon moving with the wind in a horizontal line at a constant height. The angle of elevation of the balloon from the boy at an instant is . After 2 minutes, from the same point of observation, the angle of elevation reduces to . If the speed of the wind is m/min. then, find the height of the balloon from the ground level.
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Question Text | A boy standing on the ground, spots a balloon moving with the wind in a horizontal line at a constant height. The angle of elevation of the balloon from the boy at an instant is . After 2 minutes, from the same point of observation, the angle of elevation reduces to . If the speed of the wind is m/min. then, find the height of the balloon from the ground level. |