Sharp EL-9650 Operation Manual page 72

CHAPTER 3
1. Rectangular coordinates → Polar coordinates
xy→r (:finds polar coordinate r from rectangular coordinates (x,y)
xy→θ (:finds polar coordinate θ from rectangular coordinates (x,y)
Conversion formulas:
The following scopes are used to find θ
Deg mode: 0
Rad mode: 0
Grad mode: 0
2. Polar coordinates → Rectangular coordinates
rθ→x (:finds rectangular coordinate x from polar coordinates (r, θ)
rθ→y (:finds rectangular coordinate y from polar coordinates (r, θ)
<Coordinate conversion examples>
No. Example
1 Rectangular coordinate
→polar coordinates:
Convert coordinates (5,3)
to polar coordinates
(Angle mode:Deg)
2 Polar coordinates
→rectangular coordinates:
Convert coordinates
(r=14, θ=π/3) to rectangu-
lar coordinates (Angle
mode:Rad)
3 Application example
Find size and direction
(phase) of vector i = 3+j9
(Angle mode:Deg)
* For degree conversion, it is possible to input lists and variables. It is not restricted only to
numerical values. To use variables, numeric values must be entered for the variables.
r
|θ| 180
π
|θ|
|θ| 200
≥D3
Key operations
First find r
≥D4
Next find θ
≥D5
/ )®
First find x
≥D6
3
)®
Next find y
3
≥D3
First find the size
≥D4
Next find the direction
Y
r
θ
0
, )®
, )®
,
5 3
,
5 3
,Ïπ
,
14
,Ïπ/
,
14
, )®
, )®
,
3 9
,
3 9
62
X
Answer
5.830951895
30.96375653
7
12.12435565
9.486832981
71.56505118