(Solved): Conics in Polar Coordinates Sketch the conic sections whose polar coordinate equations are given in ...

Conics in Polar Coordinates Sketch the conic sections whose polar coordinate equations are given in Exercises 77-80. Give polar coordinates for the vertices and, in the case of ellipses, for the centers as well. 78. $$r=\frac{8}{2+\cos ?}$$ Identify the surface for each of the following equations. $$\begin{array}{l}?\sin ?=2\\ z=r\end{array}$$