QJEEM21Ph3c36: JEE Main 2021 Physics - Class 11 JEEM21Ph3c36 Solution: A swimmer wants to cross a river from point A to point B. Line…

A swimmer wants to cross a river from point A to point B. Line AB 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.