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Mathematics 10 Online
OpenStudy (anonymous):

The circle shown below has AB and BC as its tangents. If the measure of arc AC is 120°, what is the measure of angle ABC? 60° 70° 40° 65°

OpenStudy (anonymous):

OpenStudy (anonymous):

60 degrees

OpenStudy (anonymous):

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OpenStudy (anonymous):

the 3 angles marked = 90 + 90 + 120 = 300 so angle ABC = 360-300 = 60

OpenStudy (anonymous):

thank you

OpenStudy (anonymous):

yw

OpenStudy (anonymous):

What if the measurement of the arc AC is 160 degrees?

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