Definitions
from Wiktionary, Creative Commons Attribution/ShareAlike License
 n. Abbreviation of arctangent.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
 n. the inverse function of the tangent; the angle that has a tangent equal to a given number
Etymologies
Examples

"arctan"; opchTbl [6]. code = 7; opchTbl [6]. grade =

I was once told that the gradient on a road sign is not arctan but rather arcsin  i.e. 10% is 1m up for 10m on the slope.

The Smallest PisotVijayaraghavan number. arctan (1/2)/Pi, to 1024 digits. product (1+1/n**3, n = 1. .infinity) exp (Pi*sqrt (163)), the Ramanujan number

I fitted a simple arctan function through their water storage curve and added that to Stefan's already extended script.

Calculate the equivalent 35mm film focal length from the AOV AOV = arctan (28.62/72) * 2

And, he apparently is well educated, as he knows the number pi and trigonometrical functions like sin, cos, tan, arcsin, arccos, arctan and the functions sqrt and exp.
Linux Journal  The Original Magazine of the Linux Community

In order to convert the coordinates of a point (x0, y0) in Cartesian coordinates to a point (0, r0) in NPC, use these formulas: 0 ¼ arctan ðx0 = y0 Þ if y0 >

The angle is the arctangent of the ratio of the absolute value of the capacitive reactance to the resistance: RC ¼ arctan ðjXC j = RÞ

CHAPTER 3 Graphs and Inverses GRAPH OF ARCTANGENT FUNCTION Figure 313 is a graph of the function y ¼ arctan x (or y ¼ tanÀ1 x).

The arctangent function, y ¼ arctan x, is de ﬁ ned for (a) all values of x (b) x >
Wordnik is becoming a notforprofit! Read our announcement here.
Comments
Log in or sign up to get involved in the conversation. It's quick and easy.