# Knowledge Base

## Solution 40404: Performing Vector Calculations in Polar Form Using the TI-84 Plus CE.

### How do I perform vector calculations in Polar form using the TI-84 Plus CE?

The example below will demonstrate how to perform vector calculations in Polar form using the TI-84 Plus CE.

NOTE: For this example, the mode settings will need to be changed.

• Press [MODE] and verify [Radian] mode is set. If not use the arrow keys to select [Radian] then press [Enter]
• Next verify the complex mode [re^(θi)] mode is set. If not use the arrow keys to select [re^(θi)] then press [Enter]

• Press   [2ND] [ex].
• Press   [Angle] [1:°].
• Press [2ND] [i].
• If in MATH PRINT mode, press [►] to begin new input. If in CLASSIC mode, press [ ) ] to begin new input.

• Press [+].
• Press  .
• Press [2ND] [i].
• If in MATH PRINT mode, press [►] to finish the input. If in CLASSIC mode, press [ ) ] to finish the input.
• Press [ENTER] to display a result of 41.05514216e^1.036281249i. This result displays the angle as a radian angle since you are in radian mode.
• To convert the radian angle to a degree result take the angle part 1.036281249 and multiply it by (180/π) which will display the degree angle of 59.37454196