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A river is flowing with a speed of 1 km ...

A river is flowing with a speed of `1 km h^-1` A swimmer wants to go point `C` starting from `A`. He swims with a speed of `5 km h^-1` at an angle `theta` w.r.t. the river flow. If `AB = BC = 400 m`, at what angle with the river bank should the swimmer swim ?
.

A

`37^(@)`

B

`30^(@)`

C

`53^(@)`

D

`45^(@)`

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The correct Answer is:
C
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