Example 2 - HP 39gs Master Manual

Since this is not a right triangle, the first step is to ensure that
α β
the three angles or
,
δ
In this case I will use
the illustration, just as it is in the diagram of the triangle. This means that
the 15 cm goes into the
those values, using the arrow keys to move from one to another. The
result should be the screen shown right.
Pressing the button labeled
being filled in, as shown.
The calculated values are highlighted for convenience.
E x a m p l e 2
E x a m p l e 2
Find the length of the hypotenuse for the triangle shown right.
Since we don't want the sizes of the angles it doesn't really matter what angle mode the aplet is set to. If you
worked the previous example then it is probably still in degree mode.
Press the button to change the screen into the right triangle
format as shown right. Pressing
remaining values from the previous problem.
Use the arrow keys to move to the
25 cm and 12 cm respectively. Then press
The result should be as shown right, giving a length for the hypotenuse
of 27.73 cm. In the example screen I have also pressed the
button (with the highlight on
places.
δ
can be used to represent the 115
for no other reason than that it is at the top of
field and the 7 cm into the
A
will result in the remaining 3 values
SHIFT CLEAR
and fields and enter the values of
A B
) so that I can see more than 2 decimal
C
is not selected, as is shown right. Any of
o angle.
field. Enter
B
12 cm
will remove the
.
153
25 cm