Step 1
state the equation of a circle
[tex](x-h)^2+(y-k)^2=r^2[/tex]where;
[tex](h,k)\text{ is the center of the circle and r is the radius of the circle}[/tex]The center of the circle is(10,-11). The radius of the circle is 20. We are only concerned with points on the circle that has a y-coordinate of 5.
Step 2
The equation now becomes;
[tex]undefined[/tex]