1. The problem statement, all variables and given/known data I understand this chapter a little better than the previous ones, but I'm having problems with these two problems. Can anyone at least lead me in? 2. Relevant equations 3. The attempt at a solution Starting from the right side for both. For the second one, turning the 1 into cos2α+sin2α. cot2α+cos2α+sin2α? I'm not sure of if this a good start, because I'm stuck from this point on.