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Mathematics 15 Online
OpenStudy (anonymous):

A line is tangent to a circle if and only if it is perpendicular to a radius at the radius’s endpoint on the circle http://media.education2020.com/EVresources/2072546_0c21b095-f79f-446e-93ba-04e6b8568f15.png

OpenStudy (amistre64):

and i assume that the sop line is tangent as well, giving us that the top line is equal to the bottom

OpenStudy (amistre64):

*top line

OpenStudy (amistre64):

equate the equations and solve for x

OpenStudy (anonymous):

Done. THank you for helping

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