Question:
A swimmer wants to cross a river from point A to point B. Line AB makes an angle of 30° with the flow of river. Magnitude of velocity of the swimmer is same as that of the river. The angle with the line AB should be ____°, so that the swimmer reaches point B.
Solution:
Both velocity vectors are of same magnitude therefore resultant would pass exactly midway through them
$\theta=30^{\circ}$
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