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OpenStudy (quickstudent):
Correct??????
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OpenStudy (quickstudent):
OpenStudy (welshfella):
If an arc = 80 degrees what does that make the angle at the center?
OpenStudy (welshfella):
|dw:1475342625727:dw|
OpenStudy (welshfella):
does that make m<AOB = 80 degrees?
OpenStudy (welshfella):
If so then m<ABC = 1/2 * 80
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OpenStudy (welshfella):
yea i just checked - that is correct
OpenStudy (welshfella):
BC is a tangent at A and m of the angle it makes with a chord of the circle is 1/2 * angle at the center.
OpenStudy (welshfella):
* tangent at B
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