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A swimmer wands to cross a river and rea...

A swimmer wands to cross a river and reach point `B` directly from `A`. The speed of the wimmer in still river and that of river flow are same. The dotted line `AN` is normal to flow direction of river. For swimmer to reach point `B`, the angle his velocity relative to river will make with line AN is given by `theta`. then the value of `theta` is :

A

`60^(@)`

B

`30^(@)`

C

`45^(@)`

D

`0^(@)`

Text Solution

Verified by Experts

The correct Answer is:
B
Since the speed of river flow and the person is same, the resultant direction AB is
such theta `(90 + theta)/(2) = 60 rArr theta = 30^(@)`
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RESONANCE-DAILY PRACTICE PROBLEM-DPP No.15
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