HP 33s - Manual (Page 136)

9–6 Operations with Complex Numbers
r
real
(a, b)
imaginary
θ
Example: Vector Addition.
Add the following three loads. You will first need to convert the polar coordinates
to rectangular coordinates.
y
185 lb 62
o
100 lb 261
o
170 lb 143
o
L 1
L 2
L 3
x
Keys: Display: Description:
Ÿ {}  Sets Degrees mode.
62 ‘ 185 | s
 )
) 
Enters L
1
and converts it to
rectangular form.
143 ‘ 170 | s

)

.)
 Enters and converts L
2
.
{ G ›
 )  
. )   Adds vectors.
261 ‘ 100 | s
. )

.)  Enters and converts L
3
.