# Knowledge Base

## Solution 34507: Performing Polar and Rectangular Conversions Using a TI-84 Plus C Silver Edition Graphing Calculator.

### How do I perform polar and rectangular conversions using a TI-84 Plus C Silver Edition graphing calculator?

The examples below demonstrate how to perform polar to rectangular and rectangular to polar coordinate conversions using a TI-84 Plus C Silver Edition graphing calculator. Converting coordinates requires two separate operations, one for each point in an ordered pair.

For Example: Convert polar coordinates (1, p) to rectangular coordinates using P►Rx( and P►Ry(

1) Press [MODE].
2) Press [▼] [▼] [▼].
3) Press [ENTER] [2ND] [QUIT]. 4) Press [2ND] [ANGLE] .
5) Press  [ , ] [2ND] [] [ ) ].
6) Press [ENTER] to display the answer -1.
7) Press [2ND] [ANGLE] .
8) Press  [ , ] [2ND] [] [ ) ].
9) Press [ENTER] to display the answer 0.
10) The polar coordinates (1,) when converted to rectangular coordinates equal (-1,0). Convert the previous calculated rectangular coordinates to polar coordinates using R►Pr( and R►Pq(.

1) Press [2ND] [ANGLE] .
2) Press [(-)]  [ , ]  [)].
3) Press [ENTER] to return the answer 1.
4) Press [2ND] [ANGLE] .
5) Press [(-)]  [ , ]  [)].
6) Press [ENTER] to get the result 3.141592654. Please see the TI-84 Plus C Silver Edition guidebook for additional information.