TAN

Purpose:

Calculates the tangent of any expression.

TAN(val)

val

A scalar, series or table.

A scalar, series, or table.

tan(-2*pi..pi/100..2*pi);gridhv;griddot;sety(-5,5)

$image\tanpic01.gif$

displays the tangent from -2π to 2π.

tan(pi/4)

returns 1.

tan(-2..0.1..2)

returns a 41 point series.

The hyperbolic secant is defined as:

$image\tan01.gif$

for all complex z.

$image\tan02.gif$

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