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An aeroplane at an altitude of 200m observesthe angles of depression of opposite points onthe two banks of a river to be 45° and 60°. Findthe width of the river. |
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Answer» Answer:Hope it is helpful:) Let the POSITION of the aeroplane be A, B and C be two points on the two banks of a river such that the angles of DEPRESSION at B and C are 45° and 60° respectively. Let BD = X m, y m andAD = 200 m. Hence, the width of the river is 315.4 metres |
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