Question

A boat is to cross a 50.36m wide river. The river has a current of 4m/s East and the Boat has a velocity of 5m/s. If the boat wants to land 20m east across the river from where it launches, what angle will it need to launch to achieve this? (I believe resultant angle is 21.66 degrees but do not know how to find what angle it needs to launch at to achieve that resultant angle. I assume it must launch at some angle West of North.)

Answer 1

Comment in case any doubt, will reply for sure.. Goodluck