Sharp EL-9900 - Manual (Page 79)

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