SOHCAHTOA

For the discussion of math. Duh.

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SOHCAHTOA

Postby UltramaticOrange » Thu Jun 28, 2007 2:56 am UTC

SOHCAHTOA = Some Old Hippie Caught Another Hippie Tripping On Acid ... or at least that's what I was taught in school...
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3.14159265...
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Postby 3.14159265... » Thu Jun 28, 2007 2:59 am UTC

The great native american warrior, SOHCAH TOA
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Postby zenten » Thu Jun 28, 2007 3:47 am UTC

I never actually learnt how to use this mnemonic to actually remember anything.

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Postby skeptical scientist » Thu Jun 28, 2007 3:55 am UTC

Sine = Opposite over Hypotenuse, Cosine = Adjacent over Hypotenuse, etc. I just learned it as "SOHCAHTOA" pronounced phonetically, without learning a phrase to go with. That worked fine for me.
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Postby zenten » Thu Jun 28, 2007 4:00 am UTC

*nod* I'm just not good with mnemonics, and just learnt it visually.

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Postby Marbas » Thu Jun 28, 2007 4:03 am UTC

I just learned SOHCAHTOA pronounced phonetically. Worked well enough for me.
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Postby joeframbach » Thu Jun 28, 2007 4:12 am UTC

Some Old Horse Caught A Horse Taking Oats Away.

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Postby FiddleMath » Thu Jun 28, 2007 8:13 am UTC

I used to get nastily ingrown toenails. Thus, "Soak-a-Toe-ah" sticks just fine for me. (In hot salt water, for about half an hour. Since you asked. ;))

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Postby adlaiff6 » Thu Jun 28, 2007 9:05 am UTC

choshacao
3.14159265... wrote:What about quantization? we DO live in a integer world?

crp wrote:oh, i thought you meant the entire funtion was f(n) = (-1)^n
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Postby evilbeanfiend » Thu Jun 28, 2007 9:19 am UTC

Marbas wrote:I just learned SOHCAHTOA pronounced phonetically. Worked well enough for me.


ditto
in ur beanz makin u eveel

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Postby UltramaticOrange » Thu Jun 28, 2007 10:19 am UTC

Marbas wrote:I just learned SOHCAHTOA pronounced phonetically. Worked well enough for me.


My family was so amused by the phrase I ended up memorizing it long before getting that far in my Geometry class. I don't really know if I needed the phrase or not as a result.
Last edited by UltramaticOrange on Thu Jun 28, 2007 10:20 am UTC, edited 1 time in total.
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Postby Cauchy » Thu Jun 28, 2007 10:19 am UTC

I was told SOHCAHTOA, but it never stuck. I just remembered what sine, cosine, and tangent were without the mnemonic.

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Postby Zohar » Thu Jun 28, 2007 10:26 am UTC

I just remembered what sin(0) and cos(0) are. Remembering that tan=sin/cos was pretty easy.
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Postby Torn Apart By Dingos » Thu Jun 28, 2007 10:47 am UTC

cos is the x one and sin is the y one, and tan=sin/cos, is what I memorized. I was never even told of a SOHCAHTOA rule (or any Swedish equivalent).

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Postby evilbeanfiend » Thu Jun 28, 2007 10:58 am UTC

what would it be in swedish? if its hard to say that might be why?
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Postby Torn Apart By Dingos » Thu Jun 28, 2007 11:37 am UTC

evilbeanfiend wrote:what would it be in swedish? if its hard to say that might be why?
I don't know, there are different ways to say it. I'm sure there's some way to word it that would be clever though. But since everyone knows English, maybe sohcahtoa is used here too, I don't know. A quick googling didn't give me any answers.

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Postby MFHodge » Thu Jun 28, 2007 2:29 pm UTC

I learned "Oscar Had A Heap Of Apples". Just have to remember that it is Sin, Cos, Tan. Not that great of a nmonic, but it works for me.
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Postby ehiunno » Thu Jun 28, 2007 3:11 pm UTC

Some Old Horse Came A Hoppin Trough Our Attic

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Postby Robin S » Thu Jun 28, 2007 5:18 pm UTC

One of our teachers told us to think of a volcano in Indonesia.

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Postby skeptical scientist » Thu Jun 28, 2007 7:36 pm UTC

adlaiff6 wrote:choshacao

I'm guessing you just made this up on the spot, but I would point out that it doesn't work as well as sohcahtoa because cosecant and cotangent both start with 'c'.
I'm looking forward to the day when the SNES emulator on my computer works by emulating the elementary particles in an actual, physical box with Nintendo stamped on the side.

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Postby dumbclown » Thu Jun 28, 2007 8:17 pm UTC

I was confused by the title of the thread. I have never even heard of SOHCAHTOA. The only mnemonic I have ever heard previously was for the colours of the rainbow. I can't remember it; the last two were in vain. I just found it easier to learn what they were instead of a mnemonic.

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Postby Silverfish » Thu Jun 28, 2007 8:56 pm UTC

VTHodge wrote:I learned "Oscar Had A Heap Of Apples". Just have to remember that it is Sin, Cos, Tan. Not that great of a nmonic, but it works for me.


I learned that, and also "Old Hippies Are High On Acid". Either way you have to remember the order of sin cos and tan.

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Postby Twasbrillig » Fri Jun 29, 2007 6:55 am UTC

Heh, when we got to the point in one of my math classes a while back in which lines on a Cartesian Plane were first mentioned, I used the mnemonic SyrCxrTyx. Sirkzerticks.

Sin = y/r
Cos = x/r
Tan = y/x
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Postby Maseiken » Fri Jun 29, 2007 7:49 am UTC

SohCahToa is the only part of Trig I like...
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Postby Keith » Fri Jun 29, 2007 7:53 am UTC

SOHCAHTOA phonetically is what most of my friends learned it as, but I learned "This Old Angel Sat On Her Coffin And Hollered." Which I guess makes TOASOHCAH, but we never tried pronouncing it.
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Postby Shadowfish » Fri Jun 29, 2007 3:40 pm UTC

At my high school, the mnemonic was "Some old horse caught another horse taking oats away".

Still, I could not remember this stuff until I saw the circle.Then,
sin=y
cos=x
tan=slope of a line from (0,0) to the point on the circle.

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Postby Alpha Omicron » Fri Jun 29, 2007 5:56 pm UTC

Oh Hell, Another Hour Of Algebra
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Postby LE4dGOLEM » Fri Jun 29, 2007 6:02 pm UTC

Making up one's own mnemonic increases its ability to be remembered.
Using a vaguely rude mnemonic increases its ability to be remembered.
Suck Off Horny
Cows And Hit
The Other Arses

Though I can remember SOH-CAH-TOA remarkably well anyway.
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Blatm
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Postby Blatm » Fri Jun 29, 2007 7:53 pm UTC

I never needed a mnemonic to remeber trig. In fact, I had never even heard of SOACAHTOA untill I saw it on this forum. Yay!

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Postby Mairead » Fri Jun 29, 2007 9:57 pm UTC

Silly Old Harry
Caught A Herring
Trawling off America

My maths teacher, upon telling us this, started explaining what the words Herring and Trawling meant. *duh!*

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Postby une see » Fri Jun 29, 2007 10:33 pm UTC

My teachers just made use remember "SOHCAHTOA." All we need is the abbreviation, really.

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3.14159265...
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Postby 3.14159265... » Fri Jun 29, 2007 10:38 pm UTC

Sine = Opposite over Hypotenuse, Cosine = Adjacent over Hypotenuse, etc. I just learned it as "SOHCAHTOA" pronounced phonetically, without learning a phrase to go with. That worked fine for me.
*nod* I'm just not good with mnemonics, and just learnt it visually.
I just learned SOHCAHTOA pronounced phonetically. Worked well enough for me.
You see the rest of us arn't stupid, or bad with memory... These are just amusing mnemonic . So please shoo, while the rest of discuss our cool Mnemonic , ok?

Edited: I had misspelled Mnemonic as pneumonic.
Last edited by 3.14159265... on Sat Jun 30, 2007 1:17 am UTC, edited 2 times in total.
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Postby Buttons » Fri Jun 29, 2007 11:34 pm UTC

Pneumonics are only necessary if you're having trouble breathing, right?

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3.14159265...
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Postby 3.14159265... » Sat Jun 30, 2007 1:15 am UTC

It sounds the same :P
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Postby DannyboyO1 » Sat Jun 30, 2007 2:14 am UTC

My high school, the trig teacher never mentioned SOHCAHTOA. This is one reason it was my worst math class.

My physics teacher did teach it to me. In an anecdote. Not about the great chief Sohcahtoa. About his son, peanutawahwee. Who, according to legend, had gone missing in the colorado mountains. Thus, Sohcahtoa called upon his people to search, and they did so in vain. They told the white man, and the white man put up signs. In english, of course. And translated the son's name as Falling Rock, as that was what Sohcahtoa had seen first after his son's birth.

To this day, you can see the signs on the winding roads of the state parks... "Watch out for falling rock."


So... I haven't been able to forget. And it has proven to be something I needed to remember a couple times a year.
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Postby adlaiff6 » Sat Jun 30, 2007 11:36 am UTC

skeptical scientist wrote:
adlaiff6 wrote:choshacao

I'm guessing you just made this up on the spot, but I would point out that it doesn't work as well as sohcahtoa because cosecant and cotangent both start with 'c'.

I actually didn't. We learnt it in high school precalc, but I think the joke was its ambiguity.
3.14159265... wrote:What about quantization? we DO live in a integer world?

crp wrote:oh, i thought you meant the entire funtion was f(n) = (-1)^n
i's like girls u crazy

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Postby cymon » Mon Jul 02, 2007 12:27 am UTC

So am I the only one who pointed out that you could substitute ALD-52 for acid?

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Postby vrek » Tue Jul 03, 2007 1:58 pm UTC

**triggery misogyny not found** :twisted:

Ten points to anyone who can tell me what that is a mnemonic for

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Postby OmnipotentEntity » Tue Jul 03, 2007 6:14 pm UTC

Sounds like a color spectrum. But I don't know what the ends mean.

EDIT: Google turned up with the resistor color code.
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Postby vrek » Tue Jul 03, 2007 7:44 pm UTC

cheater!! you used GOOGLE!!!


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