An aeroplane at an altitude of 200m observes the angles of depression of 2 opposite points on 2 banks of the river to be 45degree and 60degree.find,in metres,the width of the river.answer with figure

Asked by  | 16th Feb, 2012, 06:08: PM

Expert Answer:

Let x/200 = tan45 , y/200 = tan60
So , x = 200 , y = 200root3 = 346.4
Width = 546.4m

Answered by  | 17th Feb, 2012, 09:50: AM

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