Coordinate Conversions - HP 33s User Manual

Õ
You can press
of the stack and recall them.
However, in normal operation in ALG mode, the stack in ALG mode differs from
the one in RPN mode. (Because when you press
into X1, X2 etc.) Only after evaluating equations, programs, or integrating
equations , the values of the four registers will be the same as in RPN mode.

Coordinate Conversions

To convert between rectangular and polar coordinates:
1. Enter the coordinates (in rectangular or polar form) that you want to convert. In
ALG mode, the order is y
2. Execute the conversion you want: press
º ±
(polar–to–rectangular). The converted coordinates occupy the X–
and Y–registers.
3. The resulting display (the X–register) shows either r (polar result) or x
(rectangular result). Press
Example:
If x = 5, y = 30, what are r ,
Keys:
Ý
{  }
w ¹ °
30 5
Ø
= 56, what are x, y ?
If r = 25,
Keys:
Ý
{  }
w º ±
56 25
Ö <
or (or and
w
x or
Ø
to see
?
Display:

 

 

Display:

 

º ;
) to review the entire contents
Ï
, the result is not placed
w
r .
¹ °
(rectangular–to–polar) or
or y .
Description:
Sets Degrees mode.
Calculates hypotenuse ( r ).
Displays .
Description:
Sets Degrees mode.
Calculates x .
ALG: Summary
C–7