A swimmer can swim in still water with speed `v` and the river is flowing with velociyt `v//2`. To cross the river in shortest distance, he should swim making angle `theta` with the upstream. What is the ratio of the time taken to swim across the shortest time to that is swimming across over shortest distanceA. `costheta`B. `sin theta`C. `tan theta`D. `cot theta`

A swimmer can swim in still water with speed `v` and the river is flow

1.	A swimmer can swim in still water with speed `v` and the river is flowing with velociyt `v//2`. To cross the river in shortest distance, he should swim making angle `theta` with the upstream. What is the ratio of the time taken to swim across the shortest time to that is swimming across over shortest distanceA. `costheta`B. `sin theta`C. `tan theta`D. `cot theta`
Answer» Correct Answer - A

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