
Equation for an arc
I need some help with the equation of an arc. I want it to be part of a perfect circular arc (not oval, etc) in the +/+ quadrant. It should start at 0, 10 and go down to 10, 0. Can someone help me out with the equation for that? Should look like the top right quarter of a circle centered around 0, 0 point. I'm a bit stuck. Really I want to put this into an Excel graph but figure I'll just use the equation to create 10 points and graph it based on that.
Thanks!

Hello, mateoc15!
You have a circle, centered at (0,0) with radius 10.
Its equation is: .$\displaystyle x^2 + y^2 \:=\:10^2$
For the quartercircle in Quadrant 1: .$\displaystyle y \:=\:\sqrt{100x^2}\;\text{ for }\, 0 \leq x \leq 10$
