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sukhopar [10]
3 years ago
6

In the diagram of circle O, what is the measure of abc? 34° 45° 68° 73°

Mathematics
2 answers:
AlexFokin [52]3 years ago
8 0

Answer: 34

Step-by-step explanation:

Lady_Fox [76]3 years ago
5 0

Answer:

A. m\angle ABC=34^{\circ}

Step-by-step explanation:

We have been given a diagram. We are asked to find the measure of angle ABC.

First of all, we will find measure of major arc AC by subtracting 146 from 360 degrees.

\text{Measure of arc AC}=360^{\circ}-146^{\circ}

\text{Measure of arc AC}=214^{\circ}

Now, we will use tangent-tangent angle theorem to solve for ABC.

Tangent-Tangent angle theorem states that angle formed by two tangents outside a circle is half the difference of intercepted arcs.

m\angle ABC=\frac{214^{\circ}-146^{\circ}}{2}

m\angle ABC=\frac{68^{\circ}}{2}

m\angle ABC=34^{\circ}

Therefore, the measure of angle ABC is 34 degrees and option A is the correct choice.

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