Question about Casio FX-115ES Scientific Calculator

# Converting between Forms When working with phasors it is often necessary to convert between rectangular and polar form. To convert from rectangular form to polar form: M = sqrt{A^2 + B^2} f = arctan (B/A) To convert from polar to rectangular form: A is the part of the phasor along the real axis A = Mcos(f); B is the part of the phasor along the imaginary axis B = Msin(f); For example I have 20+j10 (rectangular form) and I need to change it to exponential form which would be a 22,3 x e^j26,5(degrees). Can I do this actions with my casio FX-115ES because other cheaper scientific calculators can, but I can't find this function in casio...

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### kakima

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You can switch the display mode for complex numbers by pressing SHIFT MODE down 3 and picking one. This will display the current result in the selected mode.

You can also override the current display mode and specify the format. Add these keystrokes at the end of a calculation: SHIFT 2 then 3 for polar or 4 for rectangular.

Posted on Nov 24, 2010

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### Conversion of polar to rectangular form and vice versa

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• Switch to CMPLX mode: [MODE] [2]
• Enter complex number in polar form, e.g. r = 3, θ = 42Â°: 3 [SHFT] [(-)] 42 [=]
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### Polar/rectangular

For a TI-86

Converting rectangular to polar
Press "2ND" and then "MORE" for the MODE screen
Highlight PolarC and press "ENTER"
Quit that screen.
A example of converting 5+j6
Enter "(5,6)" in the calculator and press "ENTER"
Should get (7.81024967591*angle*50.1944289077)

Converting polar to rectangular
Press "2ND" and then "MORE" for the MODE screen
Highlight RectC and press "ENTER"
Quit that screen.
A example of converting 5*angle*35
Enter "(5*angle*35)
Should get (4.09576022145,2.86788218176)

Note
*angle* is the symbol when you press "2ND" then ","

Note 2
To round the an decimal places press "2ND" then "MORE" for the MODE screen and on the line that says float, choose a number on that line for the number of decimal places you would like to have.

More can be found at

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### Hello - i have a casiofx250 calculator and i urgently need to convert from rectanular to polar - how do i do this ? raj

This is an example, plug in your problem.
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