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OpenStudy (anonymous):
in the diagram, triangle ABC is inscribed in a circle and CD is tangent to the circle. If angle BCD is 40 degrees, how many degrees are there in angle A? A-20 B-30 C-40 D-50 E-60
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OpenStudy (anonymous):
|dw:1375747900717:dw|
OpenStudy (anonymous):
@koymoi please help?
OpenStudy (anonymous):
40
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