Since AC is tangent to the circle at point A, angle ACB is a right angle (90 degrees).
ac is tangent to circle o at point a, and mAB=59. What is m<ACB
121
21
31
29
If AC is tangent to circle O at point A, then angle ACB is equal to half the measure of arc AB. Since we are given that the measure of arc AB is 59 degrees, the measure of angle ACB is 59/2 = 29.5 degrees. Therefore, m<ACB is closest to 29 degrees, so the correct answer is 29.
To find the measure of angle ACB, we need more information.
