Someone me on geometric problem. equations practice.

AOB = 36°

Step-by-step explanation:

Because we know that OA is perpendicular with OC so AOC would = 90°

So AOB + BOC = AOC

(6x - 12) + (3x + 30) = 90

6x - 12 + 3x + 30 = 90

6x + 3x + 30 - 12 = 90

9x + 18 = 90

9x = 90-18

9x = 72

x = 8

So to find AOB, we would apply it to the equation:

AOB = 6x - 12

= 48 - 12

= 36°

Hope this helped :3

the third picture

step-by-step explanation:

for the points! : )