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A person, standing on the bank of a rive...

A person, standing on the bank of a river, observes that the angle subtended by a tree on the opposite bank is `60^0dot` When he retreates 20m from the bank, he finds the angle to be `30^0dot` Find the height of the tree and the breadth of the river.

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The correct Answer is:
17.32 m,10 m
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