In the diagram of circle O, what is the measure of <abc?

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asked Jul 7, 2019 56.6k views

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Elnur Abdurrakhimov · Answer 1 · 2019-07-12T10:17:02+0000

The angle formed by the intersection of 2 tangents outside the circle equals half the difference of the intercepted arcs.

near arc = 150°
far arc = 360 - 150 = 210°

m∠ABC = (210 - 150)/2 = 30°

In the diagram of circle O, what is the measure of <abc?

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