B btrfly24 New member Joined Jan 7, 2007 Messages 22 Mar 10, 2007 #1 I can't figure out where to even start on this one: Write a pair of parametric equations that will produce that portion of the circle x^2 + y^2 = 4 that lies in the third quadrant. Please help point me in the right direction! Thanks.
I can't figure out where to even start on this one: Write a pair of parametric equations that will produce that portion of the circle x^2 + y^2 = 4 that lies in the third quadrant. Please help point me in the right direction! Thanks.
pka Elite Member Joined Jan 29, 2005 Messages 11,978 Mar 10, 2007 #2 \(\displaystyle \L \begin{array}{lr} {\left\{ {\begin{array}{lr} {x(t) = 2\cos (t)} \\ {y(t) = 2\sin (t)} \\ \end{array}} \right.} & {, \pi \le t \le \frac{{3\pi }}{2}} \\ \end{array}\)
\(\displaystyle \L \begin{array}{lr} {\left\{ {\begin{array}{lr} {x(t) = 2\cos (t)} \\ {y(t) = 2\sin (t)} \\ \end{array}} \right.} & {, \pi \le t \le \frac{{3\pi }}{2}} \\ \end{array}\)
