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From: "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com>
Newsgroups: sci.math
Subject: Re: how
Date: Fri, 12 Apr 2024 13:14:45 -0700
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On 4/12/2024 9:35 AM, WM wrote:
> Le 12/04/2024 à 17:47, Richard Damon a écrit :
>> On 4/12/24 11:22 AM, WM wrote:
>>> Le 12/04/2024 à 16:57, Richard Damon a écrit :
>>>> On 4/12/24 10:44 AM, WM wrote:
>>>
>>>> "Distance" between a set and a value is not a defined term.
>>>
>>> You are wrong. Distance between (0, 10] and 11 is ?
>>
>> Not a defined term for NUMBERS.
> 
> It is 1 in geometry, in mathematics, and in set theory: The minimum 
> length to bridge.

1 is the unit. Say a normalized angle:

angle = pi / 3

p0_normal = { cos(angle), sin(angle) };

Now we can use p0_normal as a normalized direction vector. 1 Unit. Now, 
this unit denotes the radius. So we can make it any size:

say:

unit_radius = .123456789;

p0 = p0_normal * unit_radius;

;^)