Struggling with this

Mathematics

1 answer:

iren [92.7K]3 years ago

7 0

9514 1404 393

Answer:

C. 116°

Step-by-step explanation:

The angles created by the tangent and chord are each half of the measure of the circular arc they intercept. So, you can figure angle 1 two ways:

the supplement of half the arc whose measure is shown: 180°-(128°/2)=116°
half the measure of the remaining arc of the circle: (360° -116°)/2=232°/2=116°

The measure of angle 1 is 116°.

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ANSWER
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Step by step explanation
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