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Zina [86]
3 years ago
10

In the diagram of circle o, what is the measure of ZABC? O 30° O 40° O 50° O 60

Mathematics
2 answers:
denpristay [2]3 years ago
7 0

Answer:

30°

Step-by-step explanation:

Line AB and BC are tangents to the given circle.

\angle \: ABC =  \frac{1}{2} ( 210 - 150)

\angle \: ABC =  \frac{1}{2} (60) = 30 \degree

Alternatively, <ABC and <AOC are supplementary because AB and BC are tangents.

\angle \: ABC  + 150 \degree = 180 \degree

\angle \: ABC = 180 \degree - 150 \degree = 30 \degree

The correct choice is A.

netineya [11]3 years ago
3 0

Answer:30

Step-by-step explanation:

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