Texas Instruments TI-Nspire CAS User Manual

tan()
µ key
squareMatrix1 must be diagonalizable. The
result always contains floating-point
numbers.
tan⁻¹()
µ key
tan⁻¹(Expr1) ⇒ expression
tan⁻¹(List1) ⇒ list
tan⁻¹(Expr1) returns the angle whose
tangent is Expr1 as an expression.
tan⁻¹(List1) returns a list of the inverse
tangents of each element of List1.
Note: The result is returned as a degree,
gradian or radian angle, according to the
current angle mode setting.
Note: You can insert this function from the
keyboard by typing arctan(...).
In Degree angle mode:
In Gradian angle mode:
In Radian angle mode:
tan⁻¹(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:
tangentLine()
Catalog >
tangentLine(Expr1,Var,Point) ⇒
expression
tangentLine(Expr1,Var=Point) ⇒
expression
Returns the tangent line to the curve
represented by Expr1 at the point specified
in Var=Point.
Alphabetical Listing 179

Texas Instruments TI-Nspire CAS Specifications

General

Type	Graphing
Cover	-
Form factor	Pocket
Control type	Buttons, Touch
Product color	Grey, Silver
Digits	- digits
Display tilting	No
Display resolution	320 x 240 pixels
Display number of lines	- lines
Compatible operating systems	Windows XP/2000\\r Mac OS X 10.4/10.5
Battery type	AAA
Power source	Battery
Number of batteries supported	4
USB port	Yes
USB 2.0 ports quantity	1
RAM capacity	16 MB
ROM capacity	20 MB

Weight and Dimensions

Depth	198.3 mm
Width	100 mm
Height	28.7 mm