mZAOB = 6x- 12°
mZBOC = 3x+ 30°
Find mZAOB:

Answer:
36°
Step-by-step explanation:
I’m assuming <AOC is a right angle.
6x-12+3x+30=90
9x+18=90
9x=90-18
9x=72
x=8
<AOB=6x-12=6*8-12=48-12=36°