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OpenStudy (theislander):
In the diagram, m = 128° and m = 76°. What is mABC?
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OpenStudy (theislander):
OpenStudy (theislander):
A-104 B-116 C-128 D-102 E-96
OpenStudy (ranga):
Arc CD makes 128 degrees at the center of the circle. So angle CBD = 1/2 * 128 = 64 Arc DA makes 76 degrees at the center of the circle. So angle DBA = 1/2 * 76 = 38 Angle ABC = angle CBD + angle DBA = 64 + 38 = 102 degrees
OpenStudy (theislander):
Thank you so much! I understand now
OpenStudy (ranga):
You are welcome.
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