A swimmer wants to cross a river from point \(A\) to point \(B\). Line \(A B\) makes an angle of \(30^{\circ}\) with the flow of river. Magnitude of velocity of the swimmer is same as that of the river. The angle \(\theta\) with the line \({AB}\) should be \(^{\circ}\), so that the swimmer reaches point \({B}\).

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(A) \(30\)

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Both velocity vectors are of same magnitude therefore resultant would pass exactly midway through them

\(\theta=30^{\circ}\)

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