Question 1081118

Find a polar equation of an ellipse with its focus at the pole, an eccentricity of {{{e =1/4}}}, and directrix at {{{y=4=k}}}


{{{r=ek/(1+ e*cos (theta))}}}


{{{r=((1/4)4)/(1+ (1/4)*cos (theta))}}}


{{{r=1/(1+ (1/4)*cos (theta))}}}

or

{{{r=4/(cos (theta)+4)}}}


<a href="http://tinypic.com?ref=2ltldag" target="_blank"><img src="http://i67.tinypic.com/2ltldag.jpg" border="0" alt="Image and video hosting by TinyPic"></a>