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A swimmer can swim with a velocity of 10...

A swimmer can swim with a velocity of 10 kmph w.r.t the water flowing in a river with a velocity of 5 kmph.
In what direction should he swim to reach the point on the other bank just opposite to his starting point ?

Text Solution

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`sintheta=(BC)/(AC)=5/(10)=1/2`
`:.theta=30^(@)`
Swimmer should swim at `30^(@)` to the vertical.
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