Appendix A: Functions and Instructions 859
tan() @ 2Y key H Y key
tan(
expression1
) ⇒
expression
tan(
list1
) ⇒
list
tan(
expression1
)
returns the tangent of the argument
as an expression.
tan(
list1
)
returns a list of the tangents of all elements
in
list1
.
Note: The argument is interpreted as either a
degree or radian angle, according to the current
angle mode. You can use
ó
or
ô
to override the
angle mode temporarily.
In Degree angle mode:
tan((p/4)ô )
¸ 1
tan(45)
¸ 1
tan({0,60,90})
¸
{0 ‡3 undef}
In Radian angle mode:
tan(p/4)
¸ 1
tan(45¡)
¸ 1
tan({p,p/3,-p,p/4})
¸
{0 ‡3 0 1}
tan(
squareMatrix1
) ⇒
squareMatrix
Returns the matrix tangent of
squareMatrix1
. This is
not
the same as calculating the 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:
tan([1,5,3;4,2,1;6,ë 2,1]) ¸
ë 28.291… 26.088… 11.114…
12.117… ë 7.835… ë 5.481…
36.818… ë 32.806… ë 10.459…
tanê () @ ¥ S key H 2 S key
tanê (
expression1
) ⇒
expression
tanê (
list1
) ⇒
list
tanê (
expression1
)
returns the angle whose tangent
is
expression1
as an expression.
tanê (
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
...
}
tanê(
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:
tanê([1,5,3;4,2,1;6,ë 2,1])
¸
ë.083… 1.266… .622…
.748… .630… ë.070…
1.686… ë 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)}
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