1. The problem statement, all variables and given/known data I have a boat trying to cross a river with a current flowing -> The boat is attempting to make it straight across (90d). In order to do this I have to change the volocity to 119.38 and the angle to 100.3. So what is the speed of the current? 2. Relevant equations 3. The attempt at a solution I tried solving using: cos(100.3) = -current/119.38 So -current = -21.345 but this is incorrect. Can anyone help?