Asked by sha

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

ABC =180 - 20 - 90 = 70 = ACB
Answered by LiangXiaozhan
Below is the circle with center o. Given 70⁰ ,find BAC
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