1. The problem statement, all variables and given/known data A boat is rowed with constant speed u starting from a point A on the bank of a river of width d , which flows with a constant speed nu . The boatman always points the boat at a point O on the other side of the bank opposite to A. Find the equation of the path r = f (theta ) for the boat. 2. Relevant equations dx/dt = v 3. The attempt at a solution I was able to find dr/dt in terms of theta. here is my expression dr/dt= u(1-nsin(theta)). The problem is when I integrate it i have to express dt in terms of d(theta) which I cannot find.