Answer:
ACB = 214°
Step-by-step explanation:
arc ACB = arc AC + arc CB
The angle at the centre of arc AC is the measure of arc AC = 90°
The angle at the centre of arc CB is the measure of arc CB
subtended angle = 360° - (90 + 146)° = 360° - 236° = 124°
Thus
arc ACB = 90° + 124° = 214°
