Question 1099416
The tangent to a circle with centre (0,0) passes through the points
 A(11,2) and B(-1,8). Find the equation of the circle.
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m = 6/-12 = -1/2
y-2 = (-1/2)*(x-11)
Find the line perpendicular, m = +2, and thru (0,0)
The intersection of the 2 lines is the tangent point.
r = the distance from (0,0) to the tangent point.

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