a person standing on the bank of a river observes that the angle of elevation of the top of a tower standing on the opposite bank is 60°. When he moves 40m away from the bank, he finds the angle of elevation to be 30°. Find the height of the tower and width of the river.
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The answer will be 20 m
kusha11:
20m for what?
width or height?
width
okay thankyou
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