Tuesday

September 30, 2014

September 30, 2014

Posted by **Knights** on Friday, March 1, 2013 at 9:14am.

How do we do this? Set equal equations together??

- analytic geometry helps are appreciated -
**drwls**, Friday, March 1, 2013 at 10:23amr^1/2 is the radius of the circle.

r is the y-intercept of the line

y = r - x.

It is tangent to the circle if

r^2 = 2*(sqrtr)^2

(from Pythagorean rule)

Therefore r^2 = 2r

r = 2

Plot the two functions

y = 2-x and

x^2 + y^2 = 2

You will see that there is tangency at

(sqrt2, sqrt2)

- analytic geometry helps are appreciated -
**Knights**, Friday, March 1, 2013 at 10:38amthanks a bunch sire

- analytic geometry helps are appreciated -
**Anonymous**, Friday, July 19, 2013 at 6:13pmYes set the two equations equal to each other. You then get that r = 2. I'm not going to tell you all of the work because drwls has already answered.

**Answer this Question**

**Related Questions**

analytic geometry helps are appreciated - Find the maximum value of y/x over all...

analytic geometry helps are appreciated - Find the maximum value of y/x over all...

Analytic Geometry - Find the equation of the circle, with radius 1, tangent to ...

Analytic Geometry - Find the equation of the circle with radius sqrt2 tangent to...

Analytic Geometry - Find the equation of a circle passing through (3,7) and ...

Analytic Geometry - Find the equation of a circle passing through and tangent to...

Analytic Geometry - Find the equation of a circle passing through (3,7) and ...

Analytic Geometry - Find the equation of a circle passing through (3,7) and ...

Analytic Geometry - What is the equation of a circle passing through (-4,-4) and...

GEOMETRY INSCRIBED ANGLES MULTIPLE CHOICE QUESTION - Find the value of x. If ...