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 No.389232[View All]

Can you succeed where Ponychan has failed?
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1 post and 1 image reply omitted. Click View to see all.


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It's actually quite hard to solve using only elementary geometry. If you're lost, try using trig first to get the answer, and then come back and try using just elementary geometry.


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The anime seems off somehow.


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A 80
B 80
C 20

okay? okay

D 140

hmm what next


File: ugahbnj1scn4.png (104.19 KB, 300x300, 3rei-ep04-0922.png)

>D 140
I presume you mean ∠ADE (as opposed to ∠ADB) is 140°?


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So D must be 140


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Holy crap do I need to retake my math…


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I'm stuck.


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Let the length of AB be 1. Then use the Law of Sines and/or the Law of Cosines to find the length of AD, and other relevent lengths and angles. Refer to the figure in >>389233. (Note that this is somewhat cheating because it uses trig, but figuring out how to solve it with just elementary geometry is really fucking hard.


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well I don't want to cheat…



File: fdy5qrz5gzcw.jpg (135.04 KB, 720x720, 3rei-ep04-2111.jpg)

Well, it isn't really cheating. It's just solving a somewhat different problem than the one presented in the OP.


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I don't want to sin.


Well then cos instead.


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I believe I forgot how to do that.
Or maybe I never learned.


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What is the point of this exercise, and why on earth wouldn't you use the tools available to you?


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Even intelligent people can be dumb.


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Those are some powerful tools.

But I'm trying to learn something different right now and I want to better understand a magical formula if I am to use it.


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"The obvious joke in academia is the lightning fast mind of a student who is a complete idiot." -My Old Professor


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Fast is good, right?
I mean… none of us have all the time in the world.


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> I want to better understand a magical formula
Well you won't understand a magical formula unless you're a magical girl.


It's been a long time since I did geometry, but the angles of a triangle always add up to 180, right? Shouldn't be that hard


Yeah, no, I'm too far out of practice, I can't figure it out. Don't even remember how to do trig any more.


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Yo that took me like an hour and a half, I better get some sort of prize


File: wyzl3gjb6scg.png (349.97 KB, 700x700, Rarity 26t.png)

The prize is the good feeling of a job well done.

In the biz we call that "Suckeeeeeerrrrrr."


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You have defeated the evil Ponychan.
Outwitted them on every turn.


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Good job, you've solved it!


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And now for some probability! (This one should be easy.)


It's 50%. This is stupid.


If you flip two coins, there are four equally likely possibilities:
P(HH) = 1/4
P(HT) = 1/4
P(TH) = 1/4
P(TT) = 1/4

"At least on heads" means HH, HT, or TH.
So P("Both are heads" given "At least one is heads") = P(HH) / (P(HH) + P(HT) + P(TH)) = 1/3


I'm reasonably certain HT and TH shouldn't be considered unique instances in the context of this problem, but whatever.


Even though you have eliminated the possibility of two tails, the probability of a heads/tails mix is still double the probability of heads/heads. It's a completely different problem than saying given the first coin is heads rather than at least one of the two is certainly heads.


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I'm learndings!


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I read "possibility of two tails" and thought we were talking about the science behind catgirls for a second


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The only necessary science.


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A magical set coin is a pretty unique instance to begin with.


Fucking nerds


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Exactly what a power level hiding nerd would say.


Fucking nerd


Yeah, I guess that makes sense. I was never any good at understanding probability.


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>This video is unavailable.
>Sorry about that.


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Caught Trace in a bad mood.
I kept posting and he kept deleting.
He redirects the links he doesn't like from the site to a dead one.


Unlikely story


File: uki4g7wxoav4.png (46.99 KB, 1191x670, bored_fluttershy_vector_by….png)

Doesn't really matter what you are pretending to be unlikely.


File: dxh8xhdpxtz4.png (273.27 KB, 1191x670, bored_fluttershy_vector_by….png)

Doesn't really matter what you are pretending isn't unlikely.


File: 8w8gnnbducn4.png (249.77 KB, 1280x720, Fluttershy_scatting_S4E14.png)

chess mate!

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