Sharp EL-9900 Operation Manual page 79

The following math functions can be accessed with the use of @ key. To learn the
basic steps of how to access the second function of each key, refer to the section
"Second Function Key" of Chapter 2.
s
c
t
Note:
0
@
Chapter 5: Advanced Calculations — Advanced Keyboard
Enters an arcsine function to be used in a trigonometric expres-
sion.
Example
• Calculate arcsine 1.
@ s 1 E.
Enters an arccosine function to
be used in a trigonometric
expression.
Example
• Calculate arccosine 0.5.
@ c 0.5 E.
Enters an arctangent function to be used in a trigonometric
expression.
Example
• Calculate arctangent 1.
@ t 1 E.
Expressions with inverse trigonometric functions evaluate in the
following ranges.
θ = sin x, θ = tan
-1 -1
x
Deg: 0 ≤ | θ | ≤ 90
π
Rad: 0 ≤ | θ | ≤
2
Grad: 0 ≤ | θ | ≤ 100
Raises 10 to the power of x.
Enters the Euler Number
then be placed at the exponent.
Example
• Obtain a value of
@ @ 3 E.
θ = cos
Deg: 0 ≤ | θ | ≤ 180
Rad: 0 ≤ | θ | ≤ π
Grad: 0 ≤ | θ | ≤ 200
e
(2.71...) to a power. The cursor will
e
3 .
-1
x
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