1. The problem statement, all variables and given/known data See attached. 2. Relevant equations See attached. 3. The attempt at a solution I have no idea where to start. I've been banging my head against this problem for 2 hours now. I just don't see how on earth I can find theta with respect to x when it appears nowhere in the given equation! I think I am missing a key concept here. I don't want someone to just do the problem for me, but I need a starting direction. Thanks!