Find an equation for the circle that goes through the points (0,0), (0,8), and (6,12). Find an equation for the line that is tangent to this circle at (6,12).

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- March 26th 2011, 03:09 PMthamathkid1729Circle EquationFind an equation for the circle that goes through the points (0
*,*0), (0*,*8), and (6*,*12). Find an equation for the line that is tangent to this circle at (6*,*12).

- March 26th 2011, 03:13 PMPlato
- March 27th 2011, 12:02 AMmathfun
A circle has equation .

You have three points given and three unknown letters( A,B,C). Find them.

Then the equation of the tangent is

where x0,y0 is the center of the circle

x1,y1 the tangency point and r its radius