a person standing on the bank of river observe the the angle of elevation of the top of a tree standing on the opposite Bank is 60 degree when he moves 40 metre away from the bank he finds the angle of elevation to be 30 degree find the height of the tree and width of the river{use√3=1.73}
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Answer:
Width of the river is 20 meter
Height of the tree is 34.6 meter
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