1. The problem statement, all variables and given/known data there is a straight river 40m wide. the water speed on the river can be expressed as the function f(x)=3sin(∏x/40) If a boat is to cross the river from point a to point b at a constant velocity of 5 m/s determine the angle the boater should head. 2. Relevant equations 3. The attempt at a solution it will take 8 seconds for the boater to cross the river. I am thinking that since I am given that the river is 40m wide, that I should integrate f(x) to find the distance the boater will have traveled after 8 seconds. then take the inverse tangent of (40/(∫f(x)|0->8?) to find the angle?