In the diagram, what is the value of x?
A.
B.
C.
D.
E.
I know we aren't supposed to solve this through any use of trigonometry rules, but I'm not sure how to go about solving this within 2 minutes. I've tried dropping perpendicular from one of the vertices at the base to form a 30-60-90 triangle within the triangle, but I think I'm getting stuck with the algebra now?