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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 m∠ADB-example-1

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d. 96°
If m∠ADB = 42°
m∠ACB=96°
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