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Operating the TI-80 1-11
The angle mode controls:
¦
How the calculator interprets angle arguments in
SIN
,
COS
,
TAN
, and polar-to-rectangular conversions.
¦
How the calculator returns angle answers to
SIN
ê
,
COS
ê
,
TAN
ê
, and rectangular-to-polar conversions.
RADIAN
mode interprets angle arguments as radians and
returns angle answers in radians.
DEGREE
mode interprets angle arguments as degrees and
returns angle answers in degrees.
a
À
b
º
c
displays fraction results as mixed numbers; for
example, the result of
1
º
3 + 4
º
3
is displayed as
1
À
2
º
3
.
b
º
c
displays fraction results as simple fractions; for example,
the result of
1
º
3 + 4
º
3
is displayed as
5
º
3
.
AUTOSIMP
automatically simplifies fraction results to their
lowest terms before displaying them; for example, the result
of
2
º
6 + 2
º
6
is displayed as
2
º
3
.
MANSIMP
displays fraction results without automatic
simplification; for example, the result of
2
º
6 + 2
º
6
is
displayed as
4
º
6
.
FUNC
(function) graphing plots functions where
Y
is
expressed in terms of
X
(Chapter 4).
PARAM
(parametric) graphing plots relations where
X
and
Y
are each expressed in terms of
T
(Chapter 5).
CONNECTED
draws line segments between the calculated
points of the selected functions.
DOT
plots only the calculated points of the selected functions.
SEQUENTIAL
graphing evaluates and plots one function
completely before the next function is evaluated and plotted.
SIMUL
(simultaneous) graphing evaluates and plots all
selected functions for a single value of
X
,
one at a time. In
Parametric mode,
X
and
Y
are selected pairs. They are
evaluated and plotted a
T
value at a time.
RADIAN
DEGREE
a
À
b
º
c
b
º
c
AUTOSIMP
MANSIMP
FUNC
PARAM
CONNECTED
DOT
SEQUENTIAL
SIMUL