Sharp EL-5230 - Manual (Page 58)

56
Simulate an equation for different values
Example
Find the area S = bc sin A ÷ 2 when:
1 b = 3, c = 5 and A = 90° (DEG)
2 b = 3, c = 5 and A = 45° (DEG)
3 b = 4, c = 5 and A = 45° (DEG)
1. Press b 0 to select the NORMAL mode.
2. Press @ J 0 0 j.
• Sets the angular unit to DEG.
3. Press ; B ; C v
; A z 2.
• The equation is entered in the normal
way.
4. Press @ G.
• The calculator automatically calls the
display for entering variables and picks
out the variables in alphabetical order.
• If a variable already has a value, the
calculator displays that value automati-
cally.
• indicates that there are more variables.
5. Press 90 e.
• The calculator picks out the next
variable.
6. Press 3 e 5.
• indicates that this is the last variable.
7. Press e.
NORMAL MODE
0.
BCsinA©2_
BCsinA©2
A=z 0.
BCsinA©2
B=z 0.
BCsinA©2
C=5_
Area of triangle 1 is 7.5
square units.
Chapter 3: Scientific Calculations
BCsinA©2=
7.5
b
c
A
S =
S
bc sin A ч 2