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 R³´P
d ! displays the R³´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 ´Pq( Converts rectangular to polar and displays q.
Syntax: R ´Pq(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.
R³´P - q $ $ " "
<
- d ! 1
5 % ` 30 ) <
d ! 2
5 % ` 30 ) <
Math Functions 23
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