Cos ê (), Cosh(), Cosh ê () – Texas Instruments PLUS TI-89 User Manual
Page 441
424 Appendix A: Functions and Instructions
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 424 of 132
cos
ê
()
TI
-
89:
¥ R
key
TI
-
92 Plus:
2 R
key
cos
ê
(
expression1
)
⇒
expression
cos
ê
(
list1
)
⇒
list
cos
ê
(
expression1
)
returns the angle whose
cosine is
expression1
as an expression.
cos
ê
(
list1
)
returns a list of the inverse
cosines 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:
cosê (1)
¸
0
In Radian angle mode:
cosê ({0,.2,.5}) ¸
{
p
2
1.369... 1.047...
}
cos
ê
(
squareMatrix1
)
⇒
squareMatrix
Returns the matrix inverse cosine of
squareMatrix1
. This is not the same as
calculating the inverse cosine 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 and Rectangular
complex format mode:
cosê([1,5,3;4,2,1;6,л 2,1])
¸
1.734…+.064…шi л 1.490…+2.105…шi …
л.725…+1.515…шi .623…+.778…øi …
л 2.083…+2.632…шi 1.790…м 1.271…шi …
cosh()
MATH/Hyperbolic menu
cosh(
expression1
)
⇒
expression
cosh(
list1
)
⇒
list
cosh (
expression1
)
returns the hyperbolic
cosine of the argument as an expression.
cosh (
list1
)
returns a list of the hyperbolic
cosines of each element of
list1
.
cosh(1.2) ¸
1.810...
cosh({0,1.2}) ¸
{1 1.810...}
cosh(
squareMatrix1
)
⇒
squareMatrix
Returns the matrix hyperbolic cosine of
squareMatrix1
. This is not the same as
calculating the hyperbolic cosine 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:
cosh([1,5,3;4,2,1;6,ë 2,1])
¸
421.255 253.909 216.905
327.635 255.301 202.958
226.297 216.623 167.628
cosh
ê
()
MATH/Hyperbolic menu
cosh
ê
(
expression1
)
⇒
expression
cosh
ê
(
list1
)
⇒
list
cosh
ê
(
expression1
)
returns the inverse
hyperbolic cosine of the argument as an
expression.
cosh
ê
(
list1
)
returns a list of the inverse
hyperbolic cosines of each element of
list1
.
coshê (1) ¸
0
coshê ({1,2.1,3}) ¸
{0 1.372... coshê (3)}