Sharp EL-5230 User Manual

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.

BCsinA©2=

           7.5

b

c

A

S = 

S

bc sin A ÷ 2