Asked by Anonymous
The stream of a river is flowing with velocity 1 km/h.What should be the direction of a swimmer to cross the river straight if he can swim at the rate of 2 km/h in still water.
Answers
Answered by
bobpursley
draw the figure. downsteam, 1, on the hypotenuse upstream 2
the angle upstream measured from the normal across the stream is arcsin 1/2 or 30 deg
the angle upstream measured from the normal across the stream is arcsin 1/2 or 30 deg
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