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Let XY be a tangent to a circle, and let XA be a secant of the circle, as shown below. If AX = 15 and XY = 8, then what is AB?

 

 Dec 1, 2021
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XY2 = XB * AX

82 = XB * 15

XB = 4 4/15

AB = 10 11/15

 Dec 1, 2021
edited by Guest  Dec 1, 2021

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