HP 48G Series

Step 1: Move the highlight to the Eis field (if necessary) and enter
the equation. (6 can be typed using (@)@)F or selecting it
from CHARS.)
OE@C FD ?2@0)
@@A)2E @E@B
202 HNO@A ®
@@B ® 03) @@F
Step 2: Store the known values.
9 (ENTER)
4 (ENTER)
7 (ENTER)
Step 3: Solve for the angle (9).
SOLVE
22 COLYE EQUATION 0
ch2=at2+bt2-2*%a*b..
¢ I
E: H:
ENTER YALUE OF PREZ: SOLVE
EE EE UT ETE
SEEN SOLVE EQUATION i
Ee: o2= =aterhras 2¥a¥b..
oI
ENTER VALUE OR PRESS SOLVE
EDT] | [Waki] [SOLVE]
3 22% SOLVE EQUATION iH
Ec: 'ch2=a™2+b"2-2%a*b..
ca A:
: 7 :
EMTER VALUE OR PRESS SOLVE
EDT] | [WAR: INFO [SOLVE]
Step 4: How long would side ¢ be if the obtuse angle, 8, was 120
degrees? Enter 120 into & and solve for i.
120
(WV
s0LvE
SU SOLVE EQUATION i
EQ aii 2% a%bu.
ENTER VALUE OF PRESS SOLVE
ECT | [ARS [INFO [SOLVE]
Step 5: Exit the SOLVE application. Notice that the labeled results
of each execution of Ziil 4
5-6 Solving Equations
E are put on the stack for you.