Question

a boat crosses a 2 km wide river by starting out at the south shore and heading directly for the north shore if the river flows at 0.8 m/s and the boat can go at 1.4 m/s in still water, where on the opposite shore will the boat land?

Answer 1

What direction is the river flowing?

Answer 2

I found the answer, it is 1142.86 meters.
I assume that the river was flowing East.

so, the angle = arctan( .8 / 1.4 )
= 29.74 degrees.

then tan (29.74) = offset / 2000 m
= 1142.86 m