A circle touches the x-axis at (3,0) and its radius is twice the radius of circle x^2+y^2-2x-2y-2=0;find the equation of circle and the length of its chord intercepted on the y-axis?
1 Answer
Feb 10, 2018
We can find the radius of the given circle by rearranging it as
So,given equation is,
or,
So,its radius is
So,its centre will be at
graph{(x-3)^2 +(y-4)^2=16 [-20, 20, -10, 10]}
So,its equation will be
Now,put
So,the length of the cord intercepted by