Chapter 2: Main Application
49
Problem
Operation
Convert 4.25 radians to degrees.
= 243.5070629
4.25
R
w
47.3° + 82.5rad = 4774.20181°
47.3
+
82.5
R
w
How many radians is 243.5070629°?
= 4.249999999
Change the [Angle] setting to “Radian”, and then
input 243.5070629
*
w
.
Trigonometric and Inverse Trigonometric Functions
Problem
Operation
cos((
3
π
) rad) = 0.5
Change the [Angle] setting to “Radian”.
c7
/
3
w
or
c
N
7
c
3
w
2 · sin45°
×
cos65° = 0.5976724775
Change the [Angle] setting to “Degree”.
2
*
s
45
)*
c
65
w
Can be omitted.
sin
–1
0.5 =30°
(Determine
x
for sin
x
= 0.5.)
S
0.5
w
“.5” can also be used.
Logarithmic Functions and Exponential Functions
Problem Operation
log1.23 (log
10
1.23) = 0.08990511144
"
1.23
w
or
V
10
e
1.23
w
ln90 (log
e
90) = 4.49980967
I
90
w
or
V`
e
90
w
log
3
9 = 2
V
3
e
9
w
or
L
V
3
,
9
w
e
4.5
= 90.0171313
Q
4.5
w
(–3)
4
= (–3)
×
(–3)
×
(–3)
×
(–3) = 81
(
-
3
)
{
4
w
7
123 (= 123
7
1
) = 1.988647795
123
{
(
1
/
7
w
or
%
7
e
123
w
Hyperbolic and Inverse Hyperbolic Functions
Problem Operation
sinh3.6 = 18.28545536
1
3.6
w
cosh
–1
(
) = 0.7953654612
@
20
/
15
w
or
@N
20
c
15
w
