AC ← → and BC ← → are tangent to circle O at points A and B, respectively. If m∠ADB = 42°, what is m∠ACB ?
A84°
B90°
C95°
D96°

AC and BC are tangent to circle O at points A and B respectively If mADB 42 what is mACB A84 B90 C95 D96 class=