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A man can row a boat in still water with...

A man can row a boat in still water with a velocity of `8 kmph`.Water is flowing in a river with a velocity of `4 kmph`. At what angle should he row the boat so as to reach the exact opposite point

A

`150^(@)` to flow of water.

B

`120^(@)` to flow of water.

C

`30^(@)`to flow of water.

D

`90^(@)` to flow of water.

Text Solution

Verified by Experts

The correct Answer is:
B

`sin theta =(V_("river"))/(V_("boat")), alpha =90+theta` with stream
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