I. Convert Rectangular Coordinates to Polar Coordinates (a, b) to (r )

Reccomend: Ti-85: Degree Mode, PolarC Mode

        1. (2.8284.. ) so r = Q-IV

                Evaluate with Ti-85: [(] (r ) => (2.828 )

        2.. (4 ) so r = Q-III

        3. . (2.8284.. ) so r = Q-I

        4. . (1.4142.. ) so r = Q-IV

        5. . (1. ) so r =

II. Convert Polar Coordinates to Rectangular Coordinates (r ) to (a, b)

        1.  Q-II

        2.  Q-III

        3.  Q-II

        4. 

        5.  Q-I

                Evaluate with Ti-85: [(] 3  (2.8408, 0.943)