Wednesday

January 28, 2015

January 28, 2015

Posted by **ct** on Sunday, May 13, 2012 at 9:15pm.

x=4+2cos(theta) y=-1+2sin(theta)

- calculus -
**Steve**, Monday, May 14, 2012 at 9:55amcosθ = (x-4)/2

sinθ = (y+1)/2

(x-4)^2 + (y+1)^2 = 4

it's easy to see why this drops out if you rewrite the original equations as

(x-4) = 2cosθ

(y+1) = 2sinθ

So, it's the regular equation for a circle, but centered at (4,-1) instead of (0,0)

**Answer this Question**

**Related Questions**

Calculus - I'm extremely confused on what to do in part a of this question. ...

Calculus.. - 5. Eliminate the parameter and write the corresponding rectangular ...

precalc - Eliminate the parameter and write the corresponding rectangular ...

Math - Eliminate the parameter and write the corresponding rectangular equation ...

Math - Eliminate the parameter and write the corresponding rectangular equation ...

Math - Eliminate the parameter and write the corresponding rectangular equation ...

Math - Eliminate the parameter and write the corresponding rectangular equation ...

Calculus - Convert the curve to an equation in rectangular coordinates: x=sin ...

calculus - Find circumference of the circle r=2acos theta. s= Int (0 to 2pi) of ...

Pre-calculus; urgent ! Please help ! - 1.Graph the polar equation r=3-2sin(theta...