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help-1
4fc6185b9c174a978bdf93d8ae780998
419,003,660,593,397,760
Not white
12/21/2021 11:07:28
im not really on ipad i am on laptop with touchpad lmao
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Not white
12/21/2021 11:07:39
srry
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0
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The Fenice
5602
The Fenice
false
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help-1
4fc6185b9c174a978bdf93d8ae780998
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Not white
12/21/2021 11:07:59
wait
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Dev Shah
4677
Dev Shah
false
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4fc6185b9c174a978bdf93d8ae780998
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Munazza
12/21/2021 11:08:35
It's for you to help you figure out what to do next
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The Fenice
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false
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help-1
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Not white
12/21/2021 11:08:55
no like my answers are there
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help-1
4fc6185b9c174a978bdf93d8ae780998
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Not white
12/21/2021 11:08:59
but are correct?
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help-1
4fc6185b9c174a978bdf93d8ae780998
419,003,660,593,397,760
Not white
12/21/2021 11:09:14
https://cdn.discordapp.c…7856/unknown.png
unknown.png
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help-1
4fc6185b9c174a978bdf93d8ae780998
419,003,660,593,397,760
Not white
12/21/2021 11:10:27
nvm
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help-1
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Not white
12/21/2021 11:10:28
.close
1
0
510,789,298,321,096,700
TeXit
0796
TeXit
true
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6fda7d29a746429c9adfed6f733018a5
755,831,671,588,126,700
RepliedPencil
01/21/2022 05:15:04
d/dx ( f/g ) = (f'g - fg')/(g)^2
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null
null
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help-1
6fda7d29a746429c9adfed6f733018a5
755,831,671,588,126,700
RepliedPencil
01/21/2022 05:15:13
Use this
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help-1
6fda7d29a746429c9adfed6f733018a5
755,831,671,588,126,700
RepliedPencil
01/21/2022 05:15:32
Take f(x) as cosx and g(x) as x
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Dev Shah
4677
Dev Shah
false
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help-1
6fda7d29a746429c9adfed6f733018a5
353,833,028,600,070,140
QLightningWolf44
01/21/2022 05:16:07
I believe he was asking the other person to show a point
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6fda7d29a746429c9adfed6f733018a5
353,833,028,600,070,140
QLightningWolf44
01/21/2022 05:16:17
X)
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help-1
6fda7d29a746429c9adfed6f733018a5
755,831,671,588,126,700
RepliedPencil
01/21/2022 05:16:39
¯\\_(ツ)\_/¯
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help-1
6fda7d29a746429c9adfed6f733018a5
322,883,269,219,844,100
i laik turtles
01/21/2022 05:16:58
ok i'll give it a go, thanks everyone
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6fda7d29a746429c9adfed6f733018a5
755,831,671,588,126,700
RepliedPencil
01/21/2022 05:17:08
Yw!
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help-1
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Calzs
01/21/2022 05:52:01
Is there notation for SUMPRODUCT in maths?
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EpsilonNought
01/21/2022 05:52:30
Yes
0
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Calzs
01/21/2022 05:52:47
For example: A*B where A=1 and 2 B is 2 and 4 You get 2 + 8
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992c7ba07a534a0b85b321c0f8f06492
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EpsilonNought
01/21/2022 05:53:05
https://cdn.discordapp.c…20121_162252.jpg
20220121_162252.jpg
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992c7ba07a534a0b85b321c0f8f06492
869,532,694,688,706,600
EpsilonNought
01/21/2022 05:53:08
,rotate
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1
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TeXit
01/21/2022 05:53:09
https://cdn.discordapp.c…694688706620.png
869532694688706620.png
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EpsilonNought
01/21/2022 05:53:17
This is one example
0
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Calzs
01/21/2022 05:53:19
Thank u
1
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Calzs
01/21/2022 05:53:31
I think that is correct;)
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Calzs
01/21/2022 05:53:49
.close
1
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396,018,393,452,642,300
Wumpie
01/21/2022 06:10:07
How'd you do this without atan2?
https://cdn.discordapp.c…8176/unknown.png
unknown.png
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Wumpie
01/21/2022 06:10:42
Like what'd be the calculation without atan2
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dino dik
01/21/2022 06:14:18
without atan2 you'd have to have cases dedicated for each combination of positive/negative x/y
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dino dik
01/21/2022 06:14:31
https://cdn.discordapp.c…_at_19.14.24.png
Screenshot_2022-01-21_at_19.14.24.png
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1
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dino dik
01/21/2022 06:14:34
something like this
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Wumpie
01/21/2022 06:18:44
yeah I've no idea what that does
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Wumpie
01/21/2022 06:18:55
And what does arctan do then XD
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dino dik
01/21/2022 06:19:20
arctan is the inverse of the tangent function
0
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Wumpie
01/21/2022 06:19:26
tan-1?
1
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300227bf350f4dc9a3b7d014cd7c9f02
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dino dik
01/21/2022 06:19:47
yes
0
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dino dik
01/21/2022 06:20:08
atan2 returns the angle between the positive x-axis and the ray to point (x,y)
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Wumpie
01/21/2022 06:20:15
And atan?
1
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328,019,240,898,789,400
dino dik
01/21/2022 06:20:30
atan is the shorthand for arctan
0
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help-1
300227bf350f4dc9a3b7d014cd7c9f02
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Wumpie
01/21/2022 06:20:39
I know but I mean
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300227bf350f4dc9a3b7d014cd7c9f02
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Wumpie
01/21/2022 06:20:49
What does atan do what atan2 doesn't and the other way around
1
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help-1
300227bf350f4dc9a3b7d014cd7c9f02
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dino dik
01/21/2022 06:21:40
there are a few things but I'll give one example
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dino dik
01/21/2022 06:23:07
in your code snippet it looks like atan2 is used to find the angle between the cursor position and the positive x-axis, in fact it returns a unique angle (from -pi/2 to pi/2) for every ray
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300227bf350f4dc9a3b7d014cd7c9f02
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dino dik
01/21/2022 06:23:47
atan2(1, 1) will return something different to atan2(-1, -1), which intuitively makes sense if you picture the points
0
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help-1
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dino dik
01/21/2022 06:24:35
on the other hand if you used atan, you'd have to use the argument y/x in which case atan(1/1) = atan(-1/-1) which isn't very useful anymore
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300227bf350f4dc9a3b7d014cd7c9f02
328,019,240,898,789,400
dino dik
01/21/2022 06:25:24
if you'd like to know more this here would help: https://stackoverflow.com/questions/283406/what-is-the-difference-between-atan-and-atan2-in-c
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Wumpie
01/21/2022 06:59:52
What do those side lines mean again?
https://cdn.discordapp.c…1519/unknown.png
unknown.png
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300227bf350f4dc9a3b7d014cd7c9f02
396,018,393,452,642,300
Wumpie
01/21/2022 07:00:05
the bottom line means vector, I know that much
1
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300227bf350f4dc9a3b7d014cd7c9f02
396,018,393,452,642,300
Wumpie
01/21/2022 07:00:15
But then you've this
https://cdn.discordapp.c…5886/unknown.png
unknown.png
1
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300227bf350f4dc9a3b7d014cd7c9f02
396,018,393,452,642,300
Wumpie
01/21/2022 07:00:29
Which still gets assumed as vector?
https://cdn.discordapp.c…4842/unknown.png
unknown.png
1
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300227bf350f4dc9a3b7d014cd7c9f02
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Deus_Vult
01/21/2022 07:01:17
that would represent size
0
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300227bf350f4dc9a3b7d014cd7c9f02
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Deus_Vult
01/21/2022 07:01:23
or length
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300227bf350f4dc9a3b7d014cd7c9f02
244,129,917,732,651,000
Deus_Vult
01/21/2022 07:02:19
given points A - (a1,a2) and B - (b1,b2) then yea that would be the calculation for the length of the line connecting AB
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300227bf350f4dc9a3b7d014cd7c9f02
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Deus_Vult
01/21/2022 07:02:44
or rather, the distance between points A and B
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396,018,393,452,642,300
Wumpie
01/21/2022 07:08:20
ooh
1
0
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300227bf350f4dc9a3b7d014cd7c9f02
396,018,393,452,642,300
Wumpie
01/21/2022 07:08:34
Though is that not a vector
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Deus_Vult
01/21/2022 07:08:51
It doesn't have to be
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Wumpie
01/21/2022 07:09:03
but it has 2 components
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300227bf350f4dc9a3b7d014cd7c9f02
396,018,393,452,642,300
Wumpie
01/21/2022 07:09:11
b1, b2 (x, y)
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300227bf350f4dc9a3b7d014cd7c9f02
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Wumpie
01/21/2022 07:09:13
a1, a2 (x, y)
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300227bf350f4dc9a3b7d014cd7c9f02
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Deus_Vult
01/21/2022 07:09:20
you can define it as a vector of course
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300227bf350f4dc9a3b7d014cd7c9f02
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Deus_Vult
01/21/2022 07:09:53
but for the purpose of distance, |AB| is simpy the distance between 2 points which can be regarded as a vector
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Potato_Fries
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300227bf350f4dc9a3b7d014cd7c9f02
396,018,393,452,642,300
Wumpie
01/21/2022 07:10:56
Just for reference, this right?
https://cdn.discordapp.c…9664/unknown.png
unknown.png
1
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300227bf350f4dc9a3b7d014cd7c9f02
244,129,917,732,651,000
Deus_Vult
01/21/2022 07:11:29
No, a1,a2 and b1,b2 are points
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300227bf350f4dc9a3b7d014cd7c9f02
244,129,917,732,651,000
Deus_Vult
01/21/2022 07:11:43
(a1,a2) is one point b1,b2 is the other point
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300227bf350f4dc9a3b7d014cd7c9f02
244,129,917,732,651,000
Deus_Vult
01/21/2022 07:11:57
you've defined 4 seperate points here
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300227bf350f4dc9a3b7d014cd7c9f02
396,018,393,452,642,300
Wumpie
01/21/2022 07:12:22
https://cdn.discordapp.c…1122/unknown.png
unknown.png
1
0
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300227bf350f4dc9a3b7d014cd7c9f02
396,018,393,452,642,300
Wumpie
01/21/2022 07:12:25
So this?
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300227bf350f4dc9a3b7d014cd7c9f02
396,018,393,452,642,300
Wumpie
01/21/2022 07:12:32
whoops
1
0
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300227bf350f4dc9a3b7d014cd7c9f02
396,018,393,452,642,300
Wumpie
01/21/2022 07:12:33
wait
1
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300227bf350f4dc9a3b7d014cd7c9f02
244,129,917,732,651,000
Deus_Vult
01/21/2022 07:12:39
try again
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1
869,532,694,688,706,600
EpsilonNought
8684
EpsilonNought
false
205,545
help-1
300227bf350f4dc9a3b7d014cd7c9f02
396,018,393,452,642,300
Wumpie
01/21/2022 07:12:49
meant this
https://cdn.discordapp.c…6928/unknown.png
unknown.png
1
0
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null
null
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205,545
help-1
300227bf350f4dc9a3b7d014cd7c9f02
244,129,917,732,651,000
Deus_Vult
01/21/2022 07:13:20
AB is a line given to you by points A and B
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300227bf350f4dc9a3b7d014cd7c9f02
244,129,917,732,651,000
Deus_Vult
01/21/2022 07:13:28
A, B are 2 points in your 2nd dimensional space
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300227bf350f4dc9a3b7d014cd7c9f02
244,129,917,732,651,000
Deus_Vult
01/21/2022 07:13:58
a point in 2d space would have 2 components
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300227bf350f4dc9a3b7d014cd7c9f02
244,129,917,732,651,000
Deus_Vult
01/21/2022 07:14:17
A- (a1,a2) B- (b1,b2)
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help-1
300227bf350f4dc9a3b7d014cd7c9f02
396,018,393,452,642,300
Wumpie
01/21/2022 07:14:56
So if the latter image is wrong to, then what is right?
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help-1
300227bf350f4dc9a3b7d014cd7c9f02
244,129,917,732,651,000
Deus_Vult
01/21/2022 07:15:33
it's just 2 points in a graph
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help-1
300227bf350f4dc9a3b7d014cd7c9f02
244,129,917,732,651,000
Deus_Vult
01/21/2022 07:15:45
can you define 2 points in a graph?
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300227bf350f4dc9a3b7d014cd7c9f02
396,018,393,452,642,300
Wumpie
01/21/2022 07:16:35
how's it not 4
https://cdn.discordapp.c…0976/unknown.png
unknown.png
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help-1
300227bf350f4dc9a3b7d014cd7c9f02
244,129,917,732,651,000
Deus_Vult
01/21/2022 07:16:37
would it helped if I wrote instead A- (x1,y1) B-(x2,y2) ?
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help-1
300227bf350f4dc9a3b7d014cd7c9f02
396,018,393,452,642,300
Wumpie
01/21/2022 07:16:53
oh
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help-1
300227bf350f4dc9a3b7d014cd7c9f02
244,129,917,732,651,000
Deus_Vult
01/21/2022 07:17:04
(a1,a2) are the components, or the coordinates of point A
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help-1
300227bf350f4dc9a3b7d014cd7c9f02
396,018,393,452,642,300
Wumpie
01/21/2022 07:17:07
the x and y is just the same
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help-1
300227bf350f4dc9a3b7d014cd7c9f02
244,129,917,732,651,000
Deus_Vult
01/21/2022 07:17:21
a1 is the x component, and a2 is the y component
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help-1
300227bf350f4dc9a3b7d014cd7c9f02
396,018,393,452,642,300
Wumpie
01/21/2022 07:17:36
So?
https://cdn.discordapp.c…5238/unknown.png
unknown.png
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help-1
300227bf350f4dc9a3b7d014cd7c9f02
244,129,917,732,651,000
Deus_Vult
01/21/2022 07:17:51
there you go
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1
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205,545
help-1
300227bf350f4dc9a3b7d014cd7c9f02
396,018,393,452,642,300
Wumpie
01/21/2022 07:17:57
Ah, thanks
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help-1
300227bf350f4dc9a3b7d014cd7c9f02
244,129,917,732,651,000
Deus_Vult
01/21/2022 07:18:07
now the distance between those 2 points is the formula above
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help-1
300227bf350f4dc9a3b7d014cd7c9f02
396,018,393,452,642,300
Wumpie
01/21/2022 07:18:19
yeah that's just pythagoras theorum
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help-1
300227bf350f4dc9a3b7d014cd7c9f02
244,129,917,732,651,000
Deus_Vult
01/21/2022 07:18:30
yea exactly
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help-1
300227bf350f4dc9a3b7d014cd7c9f02
396,018,393,452,642,300
Wumpie
01/21/2022 07:18:43
does it matter if it's b - a or a - b actually?
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help-1
300227bf350f4dc9a3b7d014cd7c9f02
396,018,393,452,642,300
Wumpie
01/21/2022 07:18:51
in this case
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0
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help-1
300227bf350f4dc9a3b7d014cd7c9f02
244,129,917,732,651,000
Deus_Vult
01/21/2022 07:18:57
does it ?
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help-1
300227bf350f4dc9a3b7d014cd7c9f02
244,129,917,732,651,000
Deus_Vult
01/21/2022 07:18:58
you tell me
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help-1
300227bf350f4dc9a3b7d014cd7c9f02
396,018,393,452,642,300
Wumpie
01/21/2022 07:19:02
Damnit XD
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help-1
300227bf350f4dc9a3b7d014cd7c9f02
244,129,917,732,651,000
Deus_Vult
01/21/2022 07:19:06
:)
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help-1
300227bf350f4dc9a3b7d014cd7c9f02
396,018,393,452,642,300
Wumpie
01/21/2022 07:19:32
According to this, no
https://cdn.discordapp.c…9184/unknown.png
unknown.png
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help-1
300227bf350f4dc9a3b7d014cd7c9f02
396,018,393,452,642,300
Wumpie
01/21/2022 07:20:05
Or not
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