Cochleoid Inverse Curve

$\begin{figure}\begin{center}\BoxedEPSF{CochleoidInverse.epsf scaled 900}\end{center}\end{figure}$

$\begin{displaymath} r={\sin\theta\over\theta} \end{displaymath}$

(1)

with Inversion Center at the Origin and inversion radius

$\displaystyle x$	$\textstyle =$	$\displaystyle kt\cot\theta$	(2)
$\displaystyle y$	$\textstyle =$	$\displaystyle kt.$	(3)