CASIO
ƒ
x
-989ES
Scientific
sin
cos
tan
Deg
Rad
sin
-1
cos
-1
tan
-1
π
e
x
y
x
3
x
2
e
x
10
x
y
√x
3
√x
√x
ln
log
(
)
1/x
%
n!
7
8
9
+
RND
4
5
6
–
Ans
1
2
3
×
M+
0
.
EXP
/
M-
±
DEL
AC
=
MR
Developed by
wawa
™ Group