Casio ClassPad II fx-CP400 - Manual (Page 47)

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