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[" A man wishes to swim across a river "0.5km" wide."],[" If he can swim at the rate of "2km/h" in still water "],[" and the river flows at the rate of "1km/h" .The angle "],[" made by the directon (w.r.t.the flow of the river) "],[" along which he should swim so as to reach a point "],[" exactly opposite his starting point,should be: "],[[" (1) "60^(@)," (4) "120^(@)," (3) "145^(@)," (4) "90^(@)]]

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A man wishes to swim across a river 0.5km. wide if he can swim at the rate of 2 km/h. in still water and the river flows at the rate of 1km/h. The angle (w.r.t. the flow of the river) along which he should swin so as to reach a point exactly oppposite his starting point, should be:-

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