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A man wishes to swim across the river 0.5 km wide. If he can swim at the rate of 2 km/h in still water and the river flows at the rate of 1 km/h . The angle made by the direction ( w.r.t. to the flowbof the river) along which he should swim so as to reach a point exactly opposite hospital starting point, should be : 1) 60°2) 120°3) 145°4) 90° |
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Answer» A man wishes to swim across the river 0.5 km wide. If he can swim at the rate of 2 km/h in still water and the river flows at the rate of 1 km/h . The angle made by the direction ( w.r.t. to the flowbof the river) along which he should swim so as to reach a point exactly opposite hospital starting point, should be : 1) 60° 2) 120° 3) 145° 4) 90° |
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