CSC

Purpose:

Returns the cosecant of any expression.

CSC(val)

val

A scalar, series or table.

A scalar, series, or table.

csc(-2*pi..pi/100..2*pi);gridhv;griddot;sety(-10, 10)

$image\cscpic01.gif$

displays the cosecant from -2π to 2π.

csc(pi/4)

returns 1.41421356 or √2.

csc(-2..0.1..2)

returns a 41 point series.

The cosecant is defined as:

$image\csc01.gif$

for all complex z.

$image\csc02.gif$

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

At or near Nπ radians, or for 180N degrees, where N is any large integer, this function returns very large results or math errors.