Intersecting triangles. 1. The problem statement, all variables and given/known data Find x 2. Relevant equations trig and inverse trig functions? 3. The attempt at a solution I have no idea how to solve this. When I try and use the trig that I know to find the lengths, I also end up having to depend on other variables. The only thing I was able to find out is that the angle opposite the 12 is twice the that of the 6.