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Mariana [72]
3 years ago
9

In the diagram below, AB and BC are tangent to O. What is the measure of angle B?APEX

Mathematics
2 answers:
7nadin3 [17]3 years ago
8 0

Answer:

C. 54^o

Step-by-step explanation:

We have been given a circle O. AB and AC are tangent of our given circle.

Since angle B is formed by tangents outside our given circle, so we will use tangent-tangent theorem.

Tangent-Tangent theorem states that when an angle is formed outside the circle by two tangents, then the measure of angle equals half the difference of its corresponding arcs.

m\angle B=\frac{\text{Major arc - Minor arc}}{2}

m\angle B=\frac{234^o-126^o}{2}

m\angle B=\frac{108^o}{2}

m\angle B=54^o

Therefore, the measure of angle B is 54 degrees and option C is the correct choice.

Whitepunk [10]3 years ago
4 0

option C <B = 54° ( answer is attached )

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