Area Of A Triangle - Sharp EL-9600 User Manual

NAME _____________________________________________________ CLASS __________ DATE __________
9.1

AREA OF A TRIANGLE

1. Set the calculator to operate in degrees with 2ndF
and double touch 1 Deg. Press 2ndF
2. Access the SOLVER by pressing 2ndF
any equation on the screen.
3. Type in the equation A =
= a/b 1
4. Press 2ndF
choose the Equation solver. Press ENTER to see the list of variables for
your equation.
5. Find the area of a triangular garden plot with base = 4 meters and height =
8.35 meters, use
Type in 8.35 for H and press ENTER . Press
to the A variable. Press 2ndF
6. Save the formula by pressing 2ndF
Enter a name and press ENTER .
1
7. Enter A =
2
the current equation. Type in the equation with the keystrokes: ALPHA
ALPHA =
ALPHA
8. Consider the triangle where sides of lengths 4.8 and 5.73 enclose a 47° angle.
Press ENTER to access the variable list, enter 5.73 for B, 4.8 for C (or
vice-versa), and 47 for . Move the cursor to the A variable. Press 2ndF
EXE to solve for the area.
1
B•H with the keystrokes: ALPHA
2
2 ALPHA
SOLVER , touch A METHOD, and double touch 1 Equation to
to move the blinking cursor over B and type in 4.
EXE to find the area, 16.7 square meters.
B•C•sin by pressing CL a couple times to return to and delete
a/b 1 2
.
Blackline Masters/TRIGONOMETRY USING THE SHARP EL-9600
SET UP , touch B DRG,
QUIT to exit the set up screen.
SOLVER , and press CL to delete
B ALPHA H
twice to move the prompt
SOLVER and touching C SAVE.
ALPHA B ALPHA
A ALPHA
A
C sin
81