ACOT

Purpose:

Calculates the inverse cotangent of any expression.

Syntax:

ACOT(val)

val

-

A scalar, series or table.

Returns:

A scalar, series, or table.

Example:

acot(-3*pi..pi/100..3*pi);gridhv;griddot

 

 

image\acotpic01.gif

 

displays in inverse cotangent function form -3π to 3π.

Example:

acot(1)

 

returns 0.78539816, or π/4.

Example:

acot(-2..0.1..2)

 

returns a 41 point real series.

Remarks:

The inverse cotangent is defined as:

 

image\acot01.gif

 

 

for all complex z. The function is multi-valued and this definition places the branch cut in the complex plane at [-i, i].

 

image\acot03.gif

 

The function calculates in radians unless degrees are specified with the SETDEGREE function.

See Also:

ACOTH

ATAN

COT

COTH

GACOT

SETDEGREE

SETRADIAN

TRIGONOMETRIC FUNCTIONS