Polar to Rectangular form and Rectangular to Polar form in Casio fx-991 ES Plus

1) Polar to Rectangular form:

1) Press Shift button (an icon s will appear on display) then press Minus button. Resulting Rec( on display.


2) Now enter r value(magnitude) then press Shift button followed by) button which will add comma next to r value.


3) Now enter angle value and close the brackets then press (=) button. 

You will get rectangular components as shown in above photo. 

2) Rectangular to Polar form:

1) Press Shift button (an icon s will appear on display) then press Plus button. Resulting Pol( on display.


2) write first component value then add comma (Press Shift button then) button) then write second component value and close the brackets.


3) Press (=) button.


You will get Polar form as shown in above photo. 

If you have any queries do let me know in comments. If not, you can say hi too. I love it 🙂.