Keyboard Math Operations - Texas Instruments TI-80 Manual Book

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