# How to operation of a scientific calculator for conversion complex numbers

To solve the problems of a complex numbers (manual method), you should have a scientific calculator. An example Casio S-V.P.A.M fx-570w as I use to my scientific calculator, that looks like the picture below.

Operating a scientific calculator you notice calculator buttons present in a [ ] that will be described below, this applies to brands and types of scientific calculator in general.

1. Conversion the complex numbers rectangular form into polar form

Example: 30 +

r (

φ (

Becomes: 30 +

2. Conversion the complex numbers polar form into rectangular form

Example: 40 ∟ 65° = ?

x (

y (

Becomes: 40 ∟ 65° = 16.90473 +

Notes:

Operating a scientific calculator you notice calculator buttons present in a [ ] that will be described below, this applies to brands and types of scientific calculator in general.

1. Conversion the complex numbers rectangular form into polar form

Example: 30 +

*j*25 = ?

r (

*abs*) = [ SHIFT ] [ Pol( ] [ 30 ] [ , ] [ 25 ] [ ) ] [ = ] 39.05125

φ (

*angle*) = [ RCL ] [ F ] [ = ] 39.80557

Becomes: 30 +

*j*25 = 39.05125 ∟ 39.80557°

2. Conversion the complex numbers polar form into rectangular form

Example: 40 ∟ 65° = ?

x (

*real*) = [ SHIFT ] [ Rec( ] [ 40 ] [ , ] [ 65 ] [ ) ] [ = ] 16.90473

y (

*imaginary*) = [ RCL ] [ F ] [ = ] 36.25231

Becomes: 40 ∟ 65° = 16.90473 +

*j*36.25231

Notes:

- Mode position calculator in D or Deg (degree)
- RCL-E and RCL-F is use to switch the value shown.

Thanks. Works perfectly!

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