HP 33S Owner's Manual

Real–Number Functions
4–11
File name 33s-E-Manual-1008-Publication(1st).doc Page : 386
Printed Date : 2003/10/8 Size : 13.7 x 21.2 cm
Example: Polar to Rectangular Conversion.
In the following right triangles, find sides x and y in the triangle on the left, and
hypotenuse r and angle
θ
in the triangle on the right.
y
10
30
o
x
r
4
3
θ
Keys: Display: Description:
Ý
{

}

Sets Degrees mode.
30
Ï
10
º ±

Calculates x.
w

Displays y.
4
Ï
3
¹ °

Calculates hypotenuse (r).
w

Displays
θ
.
Example: Conversion with Vectors.
Engineer P.C. Bard has determined that in the RC circuit shown, the total
impedance is 77.8 ohms and voltage lags current by 36.5 º. What are the values
of resistance R and capacitive reactance X
C
in the circuit
?
Use a vector diagram as shown, with impedance equal to the polar magnitude, r,
and voltage lag equal to the angle,
θ
, in degrees. When the values are converted
to rectangular coordinates, the x–value yields R, in ohms; the y–value yields X
C
, in
ohms.



HP 33S Specifications

General

Type	Scientific
Form factor	Pocket
Product color	Silver
Digits	10 digits
Display number of lines	2 lines
Keyboard type	Alphanumeric
Menus and prompts	Yes

Weight and Dimensions

Dimensions (WxDxH)	157 x 16 x 81 mm