1. 68, AB is Perpendicular to CB so ABC is 90°, the interior angles of any triangle equal 180 so, given CAB being 22°,
90+22=112,
180-112=68
ACB=68°
2. G=23°, Angle G is equal to 1/2 arc AD, so x+2=1\2(6x-80)
x+2=3x-40
2=2x-40
42=2x
x=21
plug it back in, so...
21+2=23
Angle G equals 23°