Let's start by examining the commands used to
convert between rectangular and polar coordinates:
Our primary menu of commands is listed under ANGLE.
Press 2nd APPS (ANGLE)
to open this menu. |
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Change
Rectangular to Polar: |
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Option #5: R►P r ( is the
rectangular
to polar conversion
that returns only the r value.
Format: R►P
r (x,y) |
Option #6: R►P ( is the
rectangular to
polar conversion
that returns only the
value.
Format:
R►P (x,y)
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Change Polar to Rectangular: |
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Option #7: P►Rx
( is the
polar to rectangular conversion that returns the
x value.
Format: P►Rx
(x,y) |
Option #8: P►Ry
( is the
polar to rectangular conversion that returns the
y value.
Format: P►Ry
(x,y) |
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Examples:
1. Convert
to polar form.
We need to find the corresponding
(r, ) values
for the given
(x,y) values. |
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Options #5: R►P r (
and
#6: R►P (
give:
 |
NOTE:
Answer: (2, 2.618) or
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Answer: (2, 150º) |
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2.
Convert
 to
rectangular form.
We need to find the corresponding
(x,y) values
for the given
(r,) values. |
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Options #7: P►Rx
( and
#8: P►Ry
( give:
 |
NOTE:
Answer: (1.732, 1)
or  |
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Since the stated coordinates are expressed in
RADIAN form, set the calculator to
RADIAN mode. |
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