1 Make a table and use it to sketch the curve =cos2 r = cos 2 on the polar coordinate system. You can use a graphing calculator or Desmos (Links to an external site.) but you should still have a table of values and the points on the table should match the points on your graph. Question 2 Not all polar equations can be converted to Cartesian equations in x and y or functions of the form =() y = f ( x ) . However, this one, =2 r s i n = 2 , is also a common Cartesian equation. Convert this equation into its Cartesian form