Answer:
[tex]18\sqrt{3}[/tex]
Step-by-step explanation:
Please see the attached image
I'm assuming you've already learned the special properties of a 30-60-90 triangle.
By drawing a 30-60-90 triangle by constructing line BC, and using the special proportions that come from it, we can find that
AB=AC/2=36/2=18
and
BC=AB*[tex]\sqrt{3}[/tex]=[tex]18\sqrt{3}[/tex]
