(09.01 LC) The figure below shows a triangle with vertices A and B on a circle and vertex C
outside it. Side AC is tangent to the circle. Side BC is a secant intersecting the circle
at point X:
X
B
100
(not drawn to scale)
What is the measure of angle ACB? (6 points)
1) 29°
2) 8°
3) 16°
4) 21