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Geometry 7 Online
OpenStudy (anonymous):

Point Y is on a circle and point P lies outside the circle such that \overline{PY} is tangent to the circle. Point A is on the circle such that segment \overline{PA} meets the circle again at point B. If PA = 15 and PY = 9, then what is AB?

OpenStudy (jdoe0001):

got picture?

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