q " < -
X g P
6
" ) <
Retain radian mode on the calculator and calculate the sine of 30
¡
. Change the
calculator to degree mode and find the sine of
p
/ 6 radians.
- X
30
d " " < ) <
q < -
X g P
6
" d " "
4
) <
Rectangular to Polar
d
R
³´
P
d !
displays the
R
³´
P
menu, which has functions for converting coordinates
between rectangular (x,y) and polar (r,
q
) format. Set Angle mode, as necessary, before
starting calculations.
1:P
´
Rx(
Converts polar to rectangular and displays x.
Syntax:
P
´
Rx(
r
,
q
)
2:P
´
Ry(
Converts polar to rectangular and displays y.
Syntax:
P
´
Ry(
r
,
q
)
3:R
´
Pr(
Converts rectangular to polar and displays r.
Syntax:
R
´
Pr(
x
,
y
)
4:R
´
P
q
(
Converts rectangular to polar and displays
q
.
Syntax:
R
´
P
q
(
x
,
y
)
Example
Convert polar coordinates (r,
q
) = (5,30) into rectangular coordinates. Then convert
rectangular coordinates (
x
,
y
) = (3,4) into polar coordinates. Round decimal results to
one decimal place.
R
³´
P
- q $ $ " "
<
- d !
1
5
% `
30
) <
d !
2
5
% `
30
) <
Math Functions
23
