A circumscribed angle is that which is formed by the intersection of the two tangent lines in a circle. With this, we can conclude that segments AC and AB are tangent to circle O. The tangent lines forms a right angle with the radius of the circle drawn from the center of the circle to the tangent point.

By the explanation above, we can say that angles C and B are equal to 90° and that triangle ACO and triangle ABO are congruent. Which means that segment AC is equal to segment AB. Thus, the length of AB is also 4.

<em>Answer: 4 units</em>

7 0

4 years ago

Help my cousin pls<br> Credit: 10 points

zheka24 [161]

Ummm, we can't choose one of the problems if we can't see any of the problems...

6 0

3 years ago