1. The problem statement, all variables and given/known data arctan(8x-8)=-1 2. Relevant equations I'm sure what this part wants. 3. The attempt at a solution tan[arctan(8x-8)]=tan(-1) 8x-8=tan(-1) x=(1/8)(tan(-1)+8) x=(1/8)(-(tan(1)+8) x= I am stuck on the last part since the homework says Simplify the above equation. (Round your answers to three decimal places.) and when I put in -2.186 its wrong.