Investigation 4: Converting Between Rectangular Form and Polar Form
Converting polar coordinates to rectangular coordinates:
- You want to change the polar coordinate (r, 
) into the rectangular coordinate (x, y). 
  - Use the fact that x = r cos
 to find the value of x. 
  - Use the fact that y = r sin
 to find the value of y. 
  - The rectangular coordinates are (x, y).