Are polygonometric functions related to trigonometric functions for all angles?

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Discussion Overview

The discussion revolves around the concept of "polygonometric" functions, which are proposed as analogous to trigonometric functions for regular polygons with varying numbers of sides. Participants explore the continuity of these functions and their potential relationship to trigonometric functions as the number of sides approaches infinity, as well as possible applications for these functions.

Discussion Character

  • Exploratory
  • Conceptual clarification
  • Debate/contested

Main Points Raised

  • One participant proposes that polygonometric functions are continuous and approach trigonometric functions as the number of sides of the polygon increases.
  • Another participant suggests that polygonometric functions can be expressed in terms of trigonometric functions, preferring the simplicity of using sine and cosine over an infinite number of polygonometric functions.
  • A question is raised about how polygonometric functions would be expressed in terms of trigonometric functions.
  • It is noted that the coordinates where a ray at angle 't' intersects a regular n-gon can be described using polygonometric functions, which can be expressed in terms of sine, cosine, and the number of sides 'n'.
  • A participant seeks clarification on whether there is an algebraic relationship between the nth polygonometric function and its analogous trigonometric function across all angles.

Areas of Agreement / Disagreement

Participants express differing views on the necessity and utility of polygonometric functions compared to trigonometric functions. While some agree on the continuity and limiting behavior of polygonometric functions, the discussion remains unresolved regarding their algebraic relationship with trigonometric functions and their practical applications.

Contextual Notes

The discussion includes assumptions about the continuity of polygonometric functions and their behavior as the number of sides increases, but these assumptions are not universally accepted or proven within the thread.

Loren Booda
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Place the center of a regular polygon with number of sides s=3, 4, 5... at an origin. Also, let its vertexes intersect a unit circle, with one vertex at zero radians.

Define functions similar to those trigonometric. The sweeping vector out from the origin now varies in both its arc around from zero radians as well as its corresponding distance to the side of the polygon.

I believe these "polygonometric" functions are continuous. As s-->oo, the polygonometric functions approach the trigonometric. The relation of polygonometric functions with finite s to trigonometric functions may demonstrate great utility.

Has this idea been introduced before? What might be some of the applications for polygonometric functions?
 
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Such functions would obviously be continuous & approach the trigonometric. However, they can be expressed in terms of trigonometric functions conveniently & I'd have two functions {sin,cos} rather than an infinity of polygonometrics.
 
How would they be expressed in terms of trigonometric functions?
 
We can find where a ray making an angle 't' will cut the regular n-gon. The x & y coordinates will be the n-gonometric functions; expressible in terms of sint ,cost and n.
 
Eynstone said:
We can find where a ray making an angle 't' will cut the regular n-gon. The x & y coordinates will be the n-gonometric functions; expressible in terms of sint ,cost and n.

Isn't that essentially what I've already said? What I'm asking is whether there is an algebraic relationship between the nth polygonometric function and its analogous trigonometric function over all angles.
 

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