Chapter 2: Main Application 47
Problem Operation
Convert 4.25 radians to degrees.
= 243.5070629
4.25 Rw
47.3° + 82.5rad = 4774.20181°
47.3 + 82.5 Rw
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 cN7c 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 LV 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 c15 w
