#math trivia

[mathmatrivia]

So how big does the inner circle need to be in order to put those four points on one straight line?

It turns out to be about 38%. But this is math. We want to know exactly how much and we want to know how to find the answer!

Let's consider the bigger circle a unit circle, so R = 1. Then consider this triangle.

Ten equal sectors define the entire 360°, so they're 36° each. The center-touching angle of this triangle encompasses 2 of those sectors. Therefore, 72°.

Unfortunately, I have to use cosines now. Those who fear trigonometry may want to look away.

Cosine equals adjacent over hypotenuse. We defined the hypotenuse to be 1, because it's a unit circle. So the cosine of 72° is the height of that triangle divided by one. Or just the height of that triangle. h = cos 72°

Now lets look at this slightly different triangle.

That's only 1 out of 10 equal sectors that make up the entire circle. That's a 36° angle. And the cosine of that one is the height of the triangle (the same as the other triangle) divided by the radius of the inner circle — exactly we're trying to find! cos 36° = h / r But we know what h is. cos 36° = cos 72° / r Now we solve for r. r⋅ cos 36° = cos 72° r = cos 72° / cos 36°

That's the exact answer: cos 72° / cos 36°

If you throw it into a calculator, you'll get something like ≈ 0.3819660112510519363...

Like I said, about 38%. Or 38.197%, if you want to be pedantic. Which I hope you do.

And if you don't want your stars straight... that's fine, too. Every star is perfect for someone. ❤️🧡💛💚💙💜

#mathblr #mathematics #math #math trivia #mathmatrivia #stars #geometric shapes

[marrymepickering]

Did you know that the billionth digit of pi is 9?

#useless information w/ gin #did you know #math facts #trivia #math trivia

[thatsbelievable]

#Three Things You Probably Didn’t Know About Archimedes #Archimedes #facts #trivia #math #unreality

[kastalani123]

In theory, Annabeth Chase is the responsible, mostly level-headed, no-nonsense member of the Seven.

In practice, Annabeth Chase is a math-obsessed ADHD girl that's been training to fight for her life since she was seven, has fought in two (2) wars by the time she turns seventeen, and is simply Too Tired™ to care about consequences of her impulsive thoughts, if she ever did.

What I'm saying is she pitches the dumbest hypotheticals to Leo and then they hole themselves up with limited food and sleep to try the idea out, no matter how stupid. Their cabins often join, sometimes others as well. It's a bit like MythBusters but with less regard for human life and even more explosions. Chiron and Mr D know Something Is Up if they haven't seen either of the two in too long.

#pjo #hoo #leo valdez #annabeth chase #annabeth pjo #in conclusion: they are impulsive #and they'll do whatever comes to their mind #they literally won't be able to rest until they solve whatever problem they have chosen this week #the rest of the seven are less sciency/mathy and so very concerned #also these two fight about their math skills all the time #Leo usually wins pure math stuff #Annabeth gets him back by knowing far too much trivia #they hate each other (affectionate)

[quatregats]

Okay hear me out. What if Hornblower and Lady Barbara but they're high school math olympians and also have a crazy psychosexual rivalry with each other

#the vibes here are mean girls btw #high school academic competitions bring out insane behaviors and olympiads are even worse. and i want them to have that #lady barbara 'comes from a dynasty of math olympians and has 50x harvard legacy' wellesley #vs. horatia 'public school kid whose school has never even won a math competition but she's gonna win the fields medal' hornblower #(yeah she's trans. she's always trans she has to be trans in that book i'm sorry) #the rivalry never actually comes to anything. or they have like A Single Kiss and then are like what if we never talked about that again #it needs to be extremely early 00s teen girl movie coded. everything is subtext but they're both insane #anyways if anyone wants to write this go wild i have like 60 pages of final papers to get through first :( #perce rambles #percy yells at cecil scott #disclaimer: i did not do any olympiads. i know a couple of people who know people who did #i did however do trivia which does bring out similar behaviors i think #also sorry for making them american i just knew i'd make a hash of the british school system :// #tbh i think this would also just make a fun movie in general i think it's what the general public needs

[interoteme]

stuff my friend and i drew in the middle of a mcdonalds after experiencing a nightmare of a tmp2 game (my interpretation)

#jackbox #jackbox party pack #jackbox party pack 6 #tmp #tmp2 #trivia murder party 2 #trivia murder party #[redacted] #[redacted] jackbox #tmp host #jackbox fanart #jackbox games #man i dont know what to put in these tags. #anyway. donnie strikes again! #i drew the stuff i coloured in. we drew this like a day or two ago initially #things that happened: we both got 21 in skull dice. we tied in math. we both did well in dictation (well. nobody can beat me in dictation) #he threw us in a quiplash game and we got the same amount of votes (1). he chose donnie's answer though. whatever. i won the game. scoff. #ALSO. IF ANYONE knows how to turn his filter off. i owe my life to yoi

[jumpstartfactoftheday]

In the 90s, many of the games that CJ appeared in took place at different points in time, from a modern day school in JumpStart 2nd Grade, to medieval times in JumpStart Math for Second Graders, to a prehistoric era in JumpStart Spelling (top). Then in 2001, JumpStart Explorers depicted CJ as owning a time machine (bottom), which could retroactively explain his various time leaps in earlier games.

#character trivia #cj #jumpstart 2nd grade #jumpstart math for second graders #jumpstart spelling #jumpstart explorers #jsfotd

[sylvctica]

lil height comparison chart for shits n giggles but now with big fat noodle edition based off the moonchase cutscene instead of his fake dead noodle form

ZL human: 6'1" sylvie human: 6'3" ZL half-feral: 9'4" sylvie half-feral: 9'6" ZL noodle: 9'6" tall (around there w/o fluff), 70 feet long sylvie deer: 13 feet tall, 26 feet long

#[ the math isnt foolproof bc its just eyeballing it LMAO ] #SYLVIE // TRIVIA.

[jaytriesstuff]

Y’all ever heard of the Chicken McNugget Theorem? Also known as the McNugget factor?Y’all know what the largest number is for which it’s impossible to buy exactly that number of McNuggets? It’s 43 incase you were wondering. Can’t buy exactly 43 Chicken McNuggets.

#i don’t even go to mcdonalds #had a meeting at work today and there was a little trivia thing about our end of quarter business review #presenter says #i’ll give you a hint #it’s the largest number that you can’t buy exactly that many chicken nuggets. #i don’t even remember the question #but do you know the answer? #it 43! #just in case you were wondering #the answer is forty-fucking-three #it’s got other names not related to mcnuggets #just thinking about nugs and math at work #note: this is assuming the nuggets are sold in 3 box options (6 9 and 20) #how it was when the problem originated in the mid 1980s to early 1990s

[darabeatha]

/ Wanna know a very cute thing? the mathematical equation that appears on r.uler m.oriarty's noble phantasm' animation forms a heart-shaped graph

#;m.oriarty #about #;about #AUUGHGHGHGHGGHHGGHHGHGHGAAAAAAAAAAAAAAAAAAAAAAAWRGGHHGHGHGHGHHHHHHHHHHH #WHEN I READ IT ON THE TRIVIA SECTION I WAS SOBBINGGG #THAT'S SO CUTE WHAT????? #the evil math professor in question: #IM HOLDING HIM #maybe math isnt evil afterall..... -sniffs- #im talking about r.uler m.oriarty but i've always loved archer m.oriarty as well; m.oriarty is good civilization

[mathmatrivia]

How to do square roots on paper.

I also made an animation with pause and play buttons here. Reload that page to see it calculate the square root of a different pseudorandom number.

I had planned to make a slideshow that walked the audience through the process step by step, but it was over 20 slides, too much text, and just... a lot. If you want to see that, it's here.

#mathblr #math #mathmatrivia #mathematics #math trivia #square root #math history #oldschool #I think Newton invented this method.

[retrocgads]

UK 1985

#UK1985 #ROSE SOFTWARE #EDUCATIONAL #SPECTRUM #INTERMEDIATE ENGLISH #INTERMEDIATE MATHS #HIGHWAY CODE #QUAZER #TRIVIA

[thatsbelievable]

#Here are the Names For Each Side of a Right Triangle #math #facts #trivia

[flythesail]

Made the mistake of trying to figure out the timeline of Cassian's life 0/10 reccomend

#idk that trivia thing they just posted #the math #is it not mathing or am i confusing myself #i guess i'm used to it #the entirety of nancy drew is 5 months fjskakak #flythepost

[shoechoe]

Fuck. I'm getting the urge I get every few years to play Wizard101 again

#not jojo related #rambles #i'm not gonna do it. it's 2022 i'm not gonna do it #did anybody else here play wizard101 as a 7 year old and empty your parent's wallets #that is the funniest most blatantly scummy game of all time though #it advertises itself as ''''''''free to play'''''''' everywhere but then only the first 2 sections are free #then you either have to buy a membership which is 80 dollars a year or get crowns #with crowns you either 1. buy them or 2. play trivia on the website for max of 100 a day #i did the math on this one. it'll either cost you a minimum of $280 to buy all the crowns required to unlock the entire game #OR you'd have to do the trivia for... 2105 days straight. #thats fucking over 5 1/2 years of doing shitty trivia just to play a ''free-to-play'' game for actually free #you could also watch ads in-game for like 10 crowns each in the past but that's been disabled for over a year now. so. #needless to say i just got my parents to pay 80 dollars a year for my shitty wizard card game addiction #it's really a shame because the game IS genuinely a lot of fun if you like cartoony fantasy MMORPGs and strategy card games #it's just... really greedy and predatory especially since it's marketed towards kids #i honestly think a lot more people would consider playing it again if 1. more sections were free or 2. the price was cut in half or more #or 3. playing the game for free was more. attainable. #also it would help if the game were better advertised fjdskfldjsk ive seen the ads nowadays they look like shitty mobile game ads

[jumpstartfactoftheday]

Vickie Bottelson, the lead vocalist for the theme songs of JumpStart Advanced Preschool/Kindergarten, also provided the lead vocals for the Math Blaster theme song around this time.

#staff trivia #jumpstart tunes #jumpstart advanced series #jumpstart advanced kindergarten #math blaster #jsfotd