The circle has a center of (-2,3) and radius of 4. Find 3 equations.

1.rectangular

2.parametric

3.polar

- May 1st 2008, 07:36 PMbilbobagginsFind Rectangular,Parametric, and Polar functions for this circle?
The circle has a center of (-2,3) and radius of 4. Find 3 equations.

1.rectangular

2.parametric

3.polar - May 1st 2008, 07:54 PMo_O
1. Recall the equation of the circle: $\displaystyle (x-a)^{2} + (y-b)^{2} = r^{2}$

(a,b) represents the centre of your circle (note the negative signs) and r (not $\displaystyle r^{2}$) is your radius.

2. Parametric form is given by: $\displaystyle \begin{array}{ll} x = r\cos \theta + a \\ y = r\sin \theta + b \end{array}$