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A river is flowing from west to east at a speed of 5m per minute. A man on the south bank of the river, capable of swimming at 10m per minute in still water wants to swim across the river to a point directly opposite in the shortest time. He should then swim in a direction-
(a) 60° west of north
(b) 30°east of north
(c) 30°west of north
(d) 60°east of north
let answer be theta west of north,
10sin(theta)=5,theta=30o west of north
answer is (c)
Dear student,
The correct ans is c) 30 degree west of north
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Please feel free to ask your queries here. We are all IITians and here to help you in your IIT JEE preparation.
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