Sharp EL-9600 User Manual page 47

To find the area of a triangular garden plot with base = 4 meters and height =
8.35 meters, use
8.35 for H and press ENTER . Press
variable. Press 2ndF
to save this formula for later recall using the methods described in Chapter 7.)
The second formula for the area of a triangle can be typed in as
1
A = B•C•sin . Press CL three times to return to and delete the current equation.
2
Type in the equation A = B•C•sin with the keystrokes: ALPHA
ALPHA = a/b 1
ALPHA . Consider the triangle below where sides of lengths 4.8 and 5.73
enclose a 47° angle. The height of this triangle is not known, but you do have
the necessary information to use the formula A = B•C•sin .
to move the blinking cursor over B and type in 4. Type in
EXE to find the area, 16.7 square meters. (You may wish
1
2
2 ALPHA
5.73
47°
4.8
Area of a Triangle/TRIGONOMETRY USING THE SHARP EL-9600
twice to move the prompt to the A
B ALPHA
1
2
(
A
C sin
43