√1. The problem statement, all variables and given/known data cos√x = cosx SOLVE 2. Relevant equations 3. The attempt at a solution cos√x = cosx square both sides cos√x*cos√x = cosx*cosx cosx = cosx^2 cosx^2 - cosx = 0 cosx(cosx - 1) = 0 cosx = 0 cosx = 1 x=2Pin, NEI x = pi/2 + 2PIn, Nei however this is terribly wrong my teacher said, and she told me that the answer is something crazy. and yea.. i'm a newb so please help me.