A girl swim one bank of a river with 100m when she swims perpendicular to the water current. She reaches the other bank 50m down the stream. The angle at which she should swim ti reach a point directly opposite on the other bank of the river is?
(Velocity of girl=u, velocity of river=v)
The Attempt at a Solution
I have a problem, please tell why the question give the velocities to find the angle.
It can easily taken by applying tan value to the displacements.
then it can be gain as
tanα = 50/100 = 1/2
α = tan-(1/2)
Please tell me is this right