Keyboard math operations, Using lists with math operations, Trigonometric functions – Texas Instruments TI-83 PLUS User Manual
Page 66
TI-83 Plus
Math, Angle, and Test Operations
63
Keyboard Math Operations
Using Lists with Math Operations
Math operations that are valid for lists return a list calculated element by
element. If you use two lists in the same expression, they must be the
same length.
+ (Addition),
N
(Subtraction),
ä
(Multiplication),
à
(Division)
You can use
+
(addition,
Ã
),
N
(subtraction,
¹
),
ä
(multiplication,
¯
), and
à
(division,
¥
) with real and complex numbers, expressions, lists, and
matrices. You cannot use
à
with matrices.
valueA
+
valueB
valueA
N
valueB
valueA
ä
valueB
valueA
à
valueB
Trigonometric Functions
You can use the trigonometric (trig) functions (sine,
˜
; cosine,
™
;
and tangent,
š
) with real numbers, expressions, and lists. The current
angle mode setting affects interpretation. For example,
sin(30)
in
Radian
mode returns
L
.9880316241
; in
Degree
mode it returns
.5
.