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Shivam Bhagat Grade: 9
        

 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

6 years ago

Answers : (2)

Chetan Mandayam Nayakar
312 Points
										

let answer be theta west of north,


10sin(theta)=5,theta=30o west of north


answer is (c)

6 years ago
SAGAR SINGH - IIT DELHI
879 Points
										

Dear student,


The correct ans is c) 30 degree west of north

















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Sagar Singh


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6 years ago
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