if boat wants to cross the river along the shortest path then find out angle of boat with downstream and time taken to cross the river
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To cross the river in shortest distance, a...
To cross the river in shortest distance, a swimmer should swim making angle theta with the upstream. What is
the ratio of the time taken to swim across in the shortest time to that in swimming across over shortest
distance. [Assume speed of swimmer in still water is greater than the speed of river flow]
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