1. The problem statement, all variables and given/known data I am trying to understand how to obtain the required wind coefficients of 0.60, -0.30 and -0.60 for the problem, by using the given figure 2. Relevant equations 3. The attempt at a solution for the windward side, does it correspond to theta = 0 since the question says "normal wind"? is the leeward size at theta = 90? What does "sides" refer to?