Homework Help: geometry

Posted by Dana on Wednesday, January 18, 2012 at 10:45pm.

The equation of a circle is(x-3)squared plus (y+2)squared.The point (8,-2)is on the circle.What is the equation of the line that is tangent to the circle at (8,-2)?
y=8
x=8
x=3
y=3

geometry - Damon, Wednesday, January 18, 2012 at 10:58pm
(x-3)^2 + (y+2)^2 = r^2
(5)^2 + 0^2 = r^2
r = 5
center at (3,-2) sketch it

(8,-2) is at the right edge of the circle at x = 8 and tangent is vertical
so
x = 8

Answer this Question

Related Questions

geometry - Point P has coordinates of (-11,2) and the circle C has the equation ...
Math - A circle with the equation (x+3)squared plus (y-2)squared = 25 is ...
Math (Pre Cal) - Hi, I am studying for a precalculus quiz and I do not ...
geometry - If a circle has an area of 25 pi cm squared, find the circumference ...
math - can u help this the qustion is : A circle passes through the points (1,4...
steev - can u help this the qustion is : A circle passes through the points (1,4...
Geometry - Within an orthonormal system consider points A(1,4) B(5,1) C(4,8) (a)...
Alg2 - The tangent to a circle may be defined as the line that intersects the ...
maths - 1) Circle centre (7,-2) passes through (-2,10). Calculate radius and ...
Geometry - Circle C is centered at (-4,3). Write the equation of the line ...

For Further Reading

First Name:
School Subject:
Answer: