I never understood this stuff intuitively either until I saw a bunch of the gifs like these posted back in the day
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# ? Jun 3, 2022 07:08 |
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# ? Jun 10, 2024 12:46 |
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Nooner posted:Who the gently caress needs to know math lol I'm a technical artist which is possibly the job with the least descriptive name ever. All I do is linear algebra, trigonometry and general assorted math that everybody else is absolutely sure they wouldn't need to use after school.
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# ? Jun 3, 2022 07:11 |
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Cubone posted:trig identities were fun in integral calculus, though, they're like little logic puzzles basically, except the fun part. For a while I wasn't even thinking of some of these problems as being math, as much as bullshit puzzles where I know there's some answer if I just twist all of my little formulas and tricks in the right way. I didn't understand a god drat thing, I just barely knew enough about my tools to fake my way through.
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# ? Jun 3, 2022 07:12 |
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Rock Paper Tongue posted:At their core, sine, cosine, and tangent lines are all ratios, as someone mentioned earlier. Let's start with a basic triangle: Holy poo poo thank you very much for the effortpost! So as cosine basically correlates to the horizontal line and sine the vertical one as you mentioned, what would the tangent be in this case? I know about that the tangent relates to the circle, but I don't see how it relates to the triangle or what it's used for.
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# ? Jun 3, 2022 07:56 |
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Tangent is how the two sides of the triangle that connect with the right angle compare to each other. So as above, to get it you just divide the opposite side / adjacent side. If you're trying to place it on the circle, it is literally a tangent, which can be seen on some of the animations people have posted. If you do the whole "Increase the angle to see what happens" thing then it follows a weird pattern that becomes useful once you move to stuff that's more ambitious than just right angle triangles. If you have a look back to the formulae on Schweinhund's picture and have a really good look you realize how simple trig ratios are. They aren't arrived at by complicated poo poo, it's literally dividing one measurement by another. The x scare people because they think of algerbraic rearrangement but it's just there because it represents the angle of the particular triangle you're working on.
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# ? Jun 3, 2022 08:25 |
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Math? No thank you. Highest level math I ever took was pre-calculus in undergrad, and I barely managed to scrape by. Even then it was only thanks to a really good instructor I was able to grasp it as well as I did. So, kudos to good math teachers, I guess.
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# ? Jun 3, 2022 09:17 |
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I just spent half an hour trying to figure out the descripency between one of my timesheets being 9 hours when I added it up but working out to be 10 hours when I did the math for my invoice, so don't talk to me about *cosines*.
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# ? Jun 3, 2022 09:19 |
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Cubone posted:I learned trig over a weekend and tested in to precalculus I've gone through basically all this myself and up until the last bit you've mentioned it was fine and everything (except that I actually knew what unit circle and eurler's theorem were before uni), but then you get into working with data in more than 3 dimensions and/or linear algebra where the matrices have sines/cosines in it and I just, I got lost. And yes I know it's applicable to computer graphics. Still managed to get a 2:1 and everything. But I'm not a huge fan of trig since then, was pretty much the only thing I struggled to understand throughout university. Private Speech fucked around with this message at 09:39 on Jun 3, 2022 |
# ? Jun 3, 2022 09:33 |
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Big Scary Owl posted:Holy poo poo thank you very much for the effortpost! So as cosine basically correlates to the horizontal line and sine the vertical one as you mentioned, what would the tangent be in this case? I know about that the tangent relates to the circle, but I don't see how it relates to the triangle or what it's used for. If you have your point (x, y) on the circle, then the tangent is simply the slope of the line that goes through that point and the origin. Like you have your line equation y = k*x, so if you know x and y, then k = y / x. If they happen to be on a circle (ie satisfy x^2 + y^2 = 1 (in this case the circle can have any radius since it's a ratio)), then k is the value of the tangent function. Thus you get the equation tan a = sin a / cos a
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# ? Jun 3, 2022 10:14 |
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It's what makes you good at Worms Armageddon which is an important skill
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# ? Jun 3, 2022 10:32 |
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I have been helping a Deaf student with some trig stuff lately with an assignment relating to football and kicking angles Mathematical conversation is not a strong suit of signed communication and I ended up building a scale model so we could actually point at datums and draw lines on stuff Was really good fun
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# ? Jun 3, 2022 11:06 |
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Swagonometry
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# ? Jun 3, 2022 11:24 |
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I don't know a single person who got laid by taking the sine. It's completely useless stuff
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# ? Jun 3, 2022 11:40 |
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Angles are for dumbasses
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# ? Jun 3, 2022 11:48 |
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Mooey Cow posted:Angles are for dumbasses Lol if you can't radian
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# ? Jun 3, 2022 11:55 |
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Lol get that tongue tangential to my bawls b*ych
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# ? Jun 3, 2022 12:02 |
Chinatown posted:ive forgotten basically all math i was taught as a child including long division same. I think i still remember fractions and maybe can multiply if i count on my hands
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# ? Jun 3, 2022 12:30 |
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Cubone posted:which is obviously equal to |¼(𝑥-sin2𝑥+½𝑥+⅛sin4𝑥)+c| yes
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# ? Jun 3, 2022 12:41 |
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read this thread p high while bored out of my mind working and oo weee
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# ? Jun 3, 2022 12:42 |
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The best math is the type where there are no definite numbers and you don't need to use anything other than a pencil and some paper.
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# ? Jun 3, 2022 12:45 |
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Unit circles and waves are unnecessary bullshit. Trigonometry is for building roofs.
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# ? Jun 3, 2022 14:10 |
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In my job sometimes I need to add two or possibly three amounts together, and occasionally subtract an amount from a total.
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# ? Jun 3, 2022 14:17 |
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If i had a job, i'd quit
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# ? Jun 3, 2022 14:36 |
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the plural of abacus is abussy
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# ? Jun 3, 2022 14:39 |
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Write a raytracer from first principles, OP. It will come back to you.
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# ? Jun 3, 2022 15:38 |
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First principles? I can't even write one from second or third ones
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# ? Jun 3, 2022 15:43 |
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If this thread was posted in 2005 OP probably would've been banned for a homework help thread by ozma/debbie metallica
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# ? Jun 3, 2022 15:51 |
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fun fact: Sarah Palin named her son Trig because she is a huge fan of mathematics
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# ? Jun 3, 2022 16:47 |
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The first time I took acid I peaked during geometry class. Math has been confusing and weird to me ever since. I mean, I was always a dumbass, but I think that broke me.
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# ? Jun 3, 2022 17:34 |
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# ? Jun 10, 2024 12:46 |
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Some good effortposts in here. I love dingdongs who go all "Math sucks, nobody uses it," while totally taking for granted that planes aren't falling out of the sky, buildings aren't collapsing on top of them, and their electronics aren't spontaneously exploding (vapes and Samsungs aside (because someone didn't do the math)).
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# ? Jun 3, 2022 19:16 |