The lower window of a house is at a height of 2 m above the ground and – InterviewSolution

1.	The lower window of a house is at a height of 2 m above the ground and its upper windowis 4 m vertically above the lower window. At certain instant the angles of elevation of aballoon from these windows are 60 and 30Â° respectively. Find the height of the balloonfrom the ground.30.
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