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ab and ac are tangents to a circle with centre o. if angle bac is equal to 40 degree, find angle abc and angle acb.
8 years ago

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Damon
angles OBA and OCA are right
angle BOC is 90-40 = 50

ABC =180 - 20 - 90 = 70 = ACB
8 years ago
LiangXiaozhan
Below is the circle with center o. Given 70⁰ ,find BAC
3 years ago

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