Casio FX-300MS: Polar and Rectangular coordinate - YouTube
Casio fx-3650P - Wikipedia
Casio FX-115MS Scientific Calculator, 2-Line Big Display and Solar Plus, 279 built-in functions, including fractions, statistics, complex number calculations, base arithmetic, linear regression, stand deviation, computer science (bin/oct/dec/hex), and ...
Complex Number Calculations (Cmplx) - Casio fx-100MS User Manual [Page 16] | ManualsLib
Polar to Rectangular form using fx-991 MS calculator. - YouTube
Polar and Rectangular form conversion using calculator Fx-570 Es Plus. - YouTube