fx-82MS fx-9860GII TI-83
R►Pθ(
On a TI calculator you can convert rectangular coordinates (x, y) to polar coordinates and return θ
ANGLE B
2nd MATRX 6 R►Pθ(
or via the catalog as
CATALOG ⎵ 2nd 0 R►Pθ( ENTER
Example 1
To convert cartesian coordinates (x = 1, y = √3) to polar coordinates (r = 2, θ = 60°)
ANGLE √ I 2nd MATRX 6 R►Pθ( 1 ٬ SHIFT x² 3 EXE R►Pθ(1,√3 60
Be sure to select the angle mode Degree.
Example 2
To convert rectangular coordinates (1, 1.739) to polar coordinates (r, θ), first show R
ANGLE 2nd MATRX 6 ٬ 1 · 7 3 9 ENTER R►Pθ(1,1.739 {2.006021186,1.04892▷
and then show θ
REPLAY △ ▷ Pol(1,1.739) ◄6021186,1.048929636}