A person standing on the bank of a river observes that the angle of el – InterviewSolution

1.	A person standing on the bank of a river observes that the angle of elevation of the top of the treestanding on the opposite bank is 60°. When he moves 30m away from the bank, he finds the angleelevation to be 30°. Find the height of the tree and the width of the river.9.4
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