Question

2. A person standing on the bank of a river, observes that the angle of elevation of the
top of a tree, standing on the opposite bank is 45°. When he moves 40 m away from
the bank, he finds the angle of elevation to be 30°. Find the height of the tree and the
width of the river. ( root3 = 1.732)


please tell fast ​

Answer 1

Explanation:

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