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A pilot in an aeroplane at an altitude of 200 m observes two points lying on either side of a river. If the angles of depression of the two points be 45° and 60°, then the width of the river is

(200 + 200/√3) m
(200 - 200/√3) m
400 √3 m
(400/√3) m

Correct Answer: (200 - 200/√3) m

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