1. The problem statement, all variables and given/known data Is it possible to simplify this even further? 2. Relevant equations This is a Secant-tangent equation. Secant: AD = 18/radical 3 AC = ?? 3. The attempt at a solution I cross multiplied to get 18=324radical 3 (AC) and in the end i got 0 = (18radical3) (AC) which makes no sense so is there a different way to simplify that?