Tan ê (), Tanh(), Tanh ê () – Texas Instruments PLUS TI-89 User Manual
Page 528
Appendix A: Functions and Instructions 511
8992APPA.DOC TI-89 / TI-92 Plus: Appendix A (US English) Susan Gullord Revised: 02/23/01 1:48 PM Printed: 02/23/01 2:21 PM Page 511 of 132
tan
ê
()
TI
-
89:
¥
S
key
TI
-
92 Plus:
2
S
key
tan
ê
(
expression1
)
⇒
expression
tan
ê
(
list1
)
⇒
list
tan
ê
(
expression1
)
returns the angle whose
tangent is
expression1
as an expression.
tan
ê
(
list1
)
returns a list of the inverse
tangents of each element of
list1
.
Note:
The result is returned as either a
degree or radian angle, according to the
current angle mode setting.
In Degree angle mode:
tanê (1) ¸
45
In Radian angle mode:
tanê ({0,.2,.5}) ¸
{0 .197... .463...}
tan
ê
(
squareMatrix1
)
⇒
squareMatrix
Returns the matrix inverse tangent of
squareMatrix1
. This is not the same as
calculating the inverse tangent of each
element. For information about the
calculation method, refer to
cos()
.
squareMatrix1
must be diagonalizable. The
result always contains floating-point
numbers.
In Radian angle mode:
tanк([1,5,3;4,2,1;6,л 2,1])
¸
л.083… 1.266… .622…
.748… .630… л.070…
1.686… л 1.182… .455…
tanh()
MATH/Hyperbolic menu
tanh(
expression1
)
⇒
expression
tanh(
list1
)
⇒
list
tanh(
expression1
)
returns the hyperbolic
tangent of the argument as an expression.
tanh(
list
)
returns a list of the hyperbolic
tangents of each element of
list1
.
tanh(1.2) ¸
.833...
tanh({0,1}) ¸
{0 tanh(1)}
tanh(
squareMatrix1
)
⇒
squareMatrix
Returns the matrix hyperbolic tangent of
squareMatrix1
. This is not the same as
calculating the hyperbolic tangent of each
element. For information about the
calculation method, refer to
cos()
.
squareMatrix1
must be diagonalizable. The
result always contains floating-point
numbers.
In Radian angle mode:
tanh([1,5,3;4,2,1;6,л 2,1])
¸
л.097… .933… .425…
.488… .538… л.129…
1.282… л 1.034… .428…
tanh
ê
()
MATH/Hyperbolic menu
tanh
ê
(
expression1
)
⇒
expression
tanh
ê
(
list1
)
⇒
list
tanh
ê
(
expression1
)
returns the inverse
hyperbolic tangent of the argument as an
expression.
tanh
ê
(
list1
)
returns a list of the inverse
hyperbolic tangents of each element of
list1
.
In rectangular complex format mode:
tanhê (0) ¸
0
tanhê ({1,2.1,3}) ¸
{
ˆ
.518... м 1.570...ш i
ln(2)
2
ì
p
2ø i}