Answer:
139°
Step-by-step explanation:
A circle is equal to 360°. If you were to split the circle in two halves, one half, or a semi-circle, will be equal to 180°. Since we are looking at just one side of the circle, we know that it is equal to 180° going through points ACB.
Since the total angle is 180°, you want to subtract 41° from it to get the remaining unknown angle.
So... 180°- 41° = 139°
