Trigonometric And Inverse Trigonometric Functions; Logarithmic And Exponential Functions - Casio FX-CG20 AU User Manual

k Trigonometric and Inverse Trigonometric Functions
• Be sure to set the angle unit before performing trigonometric function and inverse
trigonometric function calculations.
(90° = (90° =
• Be sure to specify Comp for Mode in the Setup screen.
Example
π
cos ( rad) =
3
sin 45° × cos 65° = 0.5976724775
2
•
–1
sin 0.5 = 30°
x x
( when sin = 0.5)
* can be omitted.
1
*
2
* Input of leading zero is not necessary.
k Logarithmic and Exponential Functions
• Be sure to specify Comp for Mode in the Setup screen.
Example
1.23) = 0.08990511144 l1.23w
log 1.23 (log
10
log 8 = 3
2
= (–3) × (–3) × (–3) × (–3) = 81
4
(–3)
1
7 123 (= 123 ) = 1.988647795
7
• The Linear input/output mode and Math input/output mode produce different results when
two or more powers are input in series, like: 2 M 3 M 2.
Linear input/output mode: 2^3^2 = 64
This is because the Math input/output mode internally treats the above input as: 2^(3^(2)).
π π
radians = 100 grads) radians = 100 grads)
2 2
1
(0.5)
2
Operation
!m(SET UP)cccccc2(Rad)J
c$!E(π)c3w
<Linear input/output mode>
c(!E(π)/3)w
!m(SET UP)cccccc1(Deg)J
2*s45*c65w*
!s(sin w
–1 ) 0.5* 2
Operation
4(MATH)2(log a b) 2e8w
<Linear input/output mode>
K4(CALC)6(g)4(log a b) 2,8)w
(-3)M4w
!M( ') 7e123w
x
<Linear input/output mode>
')123w
x
7!M(
Math input/output mode: 2
2-16
1
3 2
= 512