1. The problem statement, all variables and given/known data lim x->0 [tex](1-cosx)/sinx[/tex] 2. Relevant equations [tex](sinx)/(1+cosx)[/tex] = [tex](1-cosx)/(sinx)[/tex] [tex]sinx/x[/tex] = 1 3. The attempt at a solution Well, I know I need to change my original limit, as I cannot let the denominator be 0. I usually try to factor out things, but there is nothing to factor out here. I'm not really sure what to do.