A) \[60{}^\circ \]
B) \[150{}^\circ \]
C) \[90{}^\circ \]
D) \[120{}^\circ \]
Correct Answer: D
Solution :
For swimmer to cross the river straight \[\Rightarrow 4\sin \theta =2\]\[\Rightarrow \sin \theta =\frac{1}{2}\Rightarrow \theta ={{30}^{o}}\] So, angle with direction of river flow \[=90{}^\circ +\theta =120{}^\circ \] Option [d]You need to login to perform this action.
You will be redirected in
3 sec