Calculating ATAN2

[Matt Agajanian]

(12-03-2022 07:10 AM)Csaba Tizedes Wrote:  There is no need to use COMPLEX mode. Just add/substract like vectors in STAT mode, then store (sumX, sumY) into (X, Y) and you can do polar conversion. The complex mode is very limited, I guess all operations can be done without it in STAT+NORMAL mode.

Aha (not the 80s band).

That was my second thought--adapt the Vector Arithmetic conversion, summation, recall, and conversion routine introduced in the HP-21 manual. Yes. That is the definitive option.

My intention was that:

Since polar/rectangular representation and complex numbers kinda go together, to me, it made sense that P/R conversion and representation would be functional in complex mode.

On another note, I agree and find it odd that complex mode is quite limiting about the functions allowed in that mode. Just a thought: perhaps because these Casio, Sharp, and TI models are targeted and priced for students, hence, the limited complex mode functionality.

I guess we're spoiled because since the 15C, a whole range of functions were operational in complex mode.