There is an easy way to get to all the "modes" that controls the way your calculator will preform the calculations: Press and hold the [LEFT-SHIFT] key (white key) then press [MODE] key, a soft menu with sub menus appears, the one you are interested in is ANGLE which you access pressing [F2] the last three soft keys switch the mode a complex or a vector will be showed.
You can also do what a I did, I assigned a little program to the [MODE] key that toggles between rectangular or polar, to do that:
- Enter this a program in the stack
«
IF -16 FC?C
THEN -16 SF
END
»
- Press 21 [ALPHA] [ALPHA] ASN [ENTER]
Is that simple! Now every time you want to switch form rectangular to polar or vice versa, just press [LEFT-SHIFT] [ALPHA] [MODE] in other words [LEFT-SHIFT] [ALPHA] is USER