Answer to Question #331887 in Mechanics | Relativity for Youngl

Question

A man which travels due north in order to cross a river 5km wide flowing due east at 3km per hour if he can roll at 10km per hour in still water

Find by calculation

The direction in which he must head his boat in order to get to his destination directly opposite his starting point

Answer 1

$\alpha=\arcsin(-\frac 3{10})=-17.5°.$