Texas Instruments TI-80 User Manual

2-4 Math, Angle, and Test Operations
The most commonly used math functions are on the keyboard. The keyboard
math operations can be used with decimal numbers, fractions (except as noted),
expressions, and lists.
The basic arithmetic functions are: addition
«
, subtraction
|
,
multiplication
p
, and division
e
. Each argument for these
functions can be a list.
valueA
+
valueB
,
valueA
ì
valueB
,
valueA
×
valueB
,
valueA
à
valueB
The trigonometric functions are interpreted according to the
current
RADIAN
/
DEGREE
mode setting. (Refer to page 1
-
9 for
instructions on changing the mode setting.) For example,
SIN 30
in
RADIAN
mode returns
L
.9880316241
; in
DEGREE
mode, it returns
.5
. Each argument for the trigonometric
functions may be a list.
SIN
value
,
COS
value
,
TAN
value
SIN
ê
,
COS
ê
, and
TAN
ê
are the inverse trig functions (arcsine,
arccosine, and arctangent).
SIN
ê
value
,
COS
ê
value
,
TAN
ê
value
RADIAN Mode
ê
(inverse,
V
) may be used with numbers, expressions, or
lists. The multiplicative inverse is the equivalent of the
reciprocal, 1
à
x.
value
ê
Keyboard Math Operations
+ (Add)
– (Subtract)
×
(Multiply)
à
(Divide)
Trig Functions
ê
(Inverse)

Texas Instruments TI-80 Specifications

General

Brand	Texas Instruments
Model	TI-80
Category	Calculator
Language	English