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Mathematics 30 Online
OpenStudy (anonymous):

What is the measure of the angle formed by two secants drawn to a circle from the same point that intercepts arcs of 80° and 30°?

OpenStudy (jdoe0001):

http://phgeometryfinalexamreview.wikispaces.com/file/view/VERY_IMPORTANT.png/148266885/741x242/VERY_IMPORTANT.png same thing, just using a tangent, but the case is exactly the same

OpenStudy (mathstudent55):

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