HP 39gs Master Guide

25
T
T
H
H
E
E
T
T
R
R
I
I
A
A
N
N
G
G
L
L
E
E
S
S
O
O
L
L
V
V
E
E
A
A
P
P
L
L
E
E
T
T
This aplet allows you to solve for missing sides and angles in a triangle,
either right angled or not. Unlike most aplets it does not have a
SYMB,
NUM and PLOT view but only the dual view discussed below.
When you first start the aplet you will be presented with one of two
views. The view right is for a general triangle, while the second view
assumes a right triangle. Obviously the amount of information which
must be supplied is less for the right triangle.
The choice of which view you use is controlled by the button labeled
, short for “rectangular”. When
is selected (shown by the
dot) you are supplying information for a right triangle.
In both cases the procedure is to supply sufficient information to allow the triangle to be solved, hence the
message to “Fill 3 out of 6 values”. This request should be taken with a pinch of salt. For example, in the
case of a right triangle it is actually only necessary to supply 2
values despite what is stated.
7cm
15cm
E
E
x
x
a
a
m
m
p
p
l
l
e
e
1
1
115°
Solve the triangle shown right.
the aplet.
Use the Aplet view to select and
The second is to ensure that we are working in degree mode. Change
to the
MODES view and choose Degrees.
Now press
SYMB (or NUM or PLOT) to change back to the view shown
right.
152

HP 39gs Specifications

General

Type	Scientific
Form factor	Pocket
Product color	Gray
Internal memory	0.256 MB

Weight and Dimensions

Weight	249 g
Dimensions (WxDxH)	187 x 94 x 31 mm