Determine whether the point $(6, 0)$ is on, inside, or outside the circle defined by the equation $(x - 5)^2 + (y - 1)^2 = 9$.

GeometryCirclesCoordinate GeometryDistance Formula
2025/3/28

1. Problem Description

Determine whether the point (6,0)(6, 0) is on, inside, or outside the circle defined by the equation (x5)2+(y1)2=9(x - 5)^2 + (y - 1)^2 = 9.

2. Solution Steps

The equation of a circle with center (h,k)(h, k) and radius rr is given by:
(xh)2+(yk)2=r2(x - h)^2 + (y - k)^2 = r^2.
In this case, the equation is (x5)2+(y1)2=9(x - 5)^2 + (y - 1)^2 = 9.
So, the center of the circle is (5,1)(5, 1) and the radius is r=9=3r = \sqrt{9} = 3.
To determine the position of the point (6,0)(6, 0) with respect to the circle, we can calculate the distance between the point and the center of the circle and compare it to the radius.
The distance dd between two points (x1,y1)(x_1, y_1) and (x2,y2)(x_2, y_2) is given by:
d=(x2x1)2+(y2y1)2d = \sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2}.
In our case, (x1,y1)=(5,1)(x_1, y_1) = (5, 1) (the center of the circle) and (x2,y2)=(6,0)(x_2, y_2) = (6, 0).
d=(65)2+(01)2=(1)2+(1)2=1+1=2d = \sqrt{(6 - 5)^2 + (0 - 1)^2} = \sqrt{(1)^2 + (-1)^2} = \sqrt{1 + 1} = \sqrt{2}.
Since r=3r = 3 and d=2d = \sqrt{2}, we compare dd and rr.
Since 21.414\sqrt{2} \approx 1.414 and 3>23 > \sqrt{2}, we have r>dr > d.
Therefore, the point (6,0)(6, 0) is inside the circle.

3. Final Answer

Inside the circle.

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