fx-82MS      fx-82TL      fx-9860GII      TI-83

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R►Pr(

On a TI calculator you can convert rectangular coordinates (x, y) to polar coordinates (r, θ)

		ANGLEB
2nd		MATRX	5

or via the catalog as

	CATALOG  ⎵
2nd		0		►R►Pr(		ENTER

 

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Example 1

To convert rectangular coordinates (x = 1, y = √3) to polar coordinates (r = 2, θ = 60°), first show r

ANGLEB

√      I

2nd

MATRX

5

R►Pr(

1

٬

2nd

x²

3

ENTER

R►Pr(1,√3

2

and then show θ

ANGLEB

√      I

2nd

MATRX

6

R►Pθ(

1

٬

2nd

x²

3

ENTER

R►Pθ(1,√3

60

 

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Example 2

To convert cartesian coordinates (1, 1.739) to polar coordinates (r, θ), first show r

	ANGLEB
2nd		MATRX	5		1	٬	1   ·   7   3   9	ENTER		R►Pr(1,1.739
										2.006021186

and then show θ

	ANGLEB
2nd		MATRX	6		6	٬	1   ·   7   3   9	ENTER		R►Pθ(1,1.739
										1.04892▷

 

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