143332 A swimmer can swim in still water with speed $v$ and the river flowing with velocity $\frac{v}{2}$. To cross the river in shortest time, he should swim making angel $\theta$ 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?
143332 A swimmer can swim in still water with speed $v$ and the river flowing with velocity $\frac{v}{2}$. To cross the river in shortest time, he should swim making angel $\theta$ 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?
143332 A swimmer can swim in still water with speed $v$ and the river flowing with velocity $\frac{v}{2}$. To cross the river in shortest time, he should swim making angel $\theta$ 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?
143332 A swimmer can swim in still water with speed $v$ and the river flowing with velocity $\frac{v}{2}$. To cross the river in shortest time, he should swim making angel $\theta$ 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?