The speed of a swimmer in still water is 
. The speed of river water is 
and is
flowing due east. If he is standing on the south bank and wishes to cross the river along the shortest path the angle at which he should make his strokes w.r.t. north is given by [NEET 2019]
west 
west
west
Text Solution
Verified by ExpertsD
Given, speed of river, 
speed of swimmer in still water and 
.
For the shortest path to cross the river, he should swim at an angle 
with the stream flow. From the figure above, 
So, angle 
is given by
As the river is flowing in east direction, so he should swim towards west.
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