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A river is flowing from the west to the ...

A river is flowing from the west to the east at 5m/min. A swimmer on the southerm bank can swim at 10 m/min in still water. In what direction should he swim if (i) He wishes to cross the river in minimum time (ii) He wishes to cross te river through shortest route

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The correct Answer is:
(i) south to north
(ii) `30^(@)` west of north
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