154
CHAPTER
6
Command
Reference
POL
Function:
(x coordinate,
Numeric expression
y coordinate)
Numeric expression
Transforms rectangular coordinates (x
,y)
to
polar coordinates
(r,
8)
.
Parameter:
x
coordinate:
y coordinate:
Explanation:
Numeric expression }
lxl + l
yl
> 0
Numeric expression
®
1)
Transforms rectangular coordinates (x ,
y)
to
polar coordinates
(r
, 8) using
the following relational expressions.
2) The
r coordinate
of
(r
,
8)
is
given
as
the
output
of
the function, and the
value
of
the r coordinate will be assigned
to
variable X and the value
of
the 8
coordinate will be assigned to variable Y at the same time.
3)
Calculation
of
the 8 coordinate will correspond to the angle unit (DEG, RAD
or GRA). The value
of
8 will be given within the following range .
DEG:
-180°
< 8
~
180°
RAD: -7T
rad<
8
~
rr
rad
GRA:
-200
gra < 8
~
200
gra
4) An error will occur when
lxl + ly l = 0.
Example:
10
CLEAR
20
MODE4
30
I
NPUT''X
= "
,A
40
I
NPUT''Y
= ''
,B
50
PRINT''r
=
";POL<A,B
6 0
PR
I
NT
"t
= " ; D
MS$<
Y )
70
GOTO
30
* (r ,
8)
will be displayed
if
(x ,
y)
is
input.
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