A) \[30{}^\circ \]east of south
B) \[60{}^\circ \] east- of south
C) \[60{}^\circ \]west of south
D) \[30{}^\circ \]west of north
Correct Answer: A
Solution :
Let the swimmer swims at an angle\[\theta \]with the vertical. \[\therefore \] \[\sin \theta =\frac{{{v}_{r}}}{{{v}_{s}}}=\frac{5}{10}=\frac{1}{2}=\sin 30{}^\circ \] \[\theta =30{}^\circ \] The swimmer should swim 30° east of south to take the shortest possible path to go to the south.You need to login to perform this action.
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