Overly Chatty Penguins

The Ready Room => Off Topic => Topic started by: duherman on February 25, 2005, 09:23:21 PM

Title: Congratulations IntensityRising
Post by: duherman on February 25, 2005, 09:23:21 PM

Well you guys have probaly noticed but am more active now and participating. This term is almost to a end and in math I've really brought up my grades I believe. Even though I  don't recieve report cards till a month from now, math is coming together for me. I just did the math final test today and I'm 3/4 done and its going smoothly. Btw the unit of math am on is trigganometry and pythagoras.

Title: Congratulations IntensityRising
Post by: Zero7 on February 25, 2005, 09:47:04 PM

Mmm.. Trigonometry. The EASIEST unit in math. Ever.

Title: Congratulations IntensityRising
Post by: Malevolent on February 25, 2005, 10:59:03 PM

Trig is the most boring math class ever. I hated trig. Calculus = better.

Title: Congratulations IntensityRising
Post by: duherman on February 25, 2005, 11:18:16 PM

My teacher taught me this.

SOH CAH TOA
Sin=Opposite over Adjacent
Cos=Ajacent over Hypotenuse
Tan=Opposite over Adjacent

Title: Congratulations IntensityRising
Post by: SwiftSpear on February 25, 2005, 11:25:03 PM

Quote

My teacher taught me this.

SOH CAH TOA
Sin=Opposite over Adjacent
Cos=Ajacent over Hypotenuse
Tan=Opposite over Adjacent

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you'd better remember that, because you are gonna end up using this crap alot if you ever do calculus, expecially at uni level for a comp science degree   <_<

Title: Congratulations IntensityRising
Post by: Dirty Harry Potter on February 26, 2005, 01:48:25 AM

you can also remember it in another way, this is my way, it may or may not be useful :p. but first some snazzy ASCII of a triangle.

Code: [Select]

             B
             /|
            / |
           /  |
          /   |
         /    |
        /     |
       /      |
      /       |
     /        |
    /         |
A ___________|C

Tan = opposite / adjacant:
if you take tan for some degree(or radian for that matter), then you get zhe....zhe......i'll just call i "a"-value for a straight line, you know: y = ax + b.
you can also calculate this a value by divided the change in the y-values with the change in the x-values. say we could take Tan(A) from our snazzy drawing, then we get the change in y-values divided by the change x-values, being |BC| / |AC|. opposite over adjacant.

Sin = Opposite / hypotenuse and Cos = Adjacant / hypotenuse:
i just remember this by the definition of Sine, it spits out the Y-value of the point where the radius touches the circles edge.  This is also how i remember cos, since it spits out the x-value.

Title: Congratulations IntensityRising
Post by: GrayDuck on February 26, 2005, 05:57:55 AM

Quote

SOH CAH TOA

LOL did your teacher make you chant it and practically dance to it?  I remember that part of math class!!!  hahaha  :p

And I disagree, trig was always the hardest for me despite math being one of my better subjects.

Ohhh congrats IR

Title: Congratulations IntensityRising
Post by: SwiftSpear on February 26, 2005, 07:34:49 AM

Quote

you can also remember it in another way, this is my way, it may or may not be useful :p. but first some snazzy ASCII of a triangle.

Code: [Select]

             B
             /|
            / |
           /  |
          /   |
         /    |
        /     |
       /      |
      /       |
     /        |
    /         |
A ___________|C

Tan = opposite / adjacant:
if you take tan for some degree(or radian for that matter), then you get zhe....zhe......i'll just call i "a"-value for a straight line, you know: y = ax + b.
you can also calculate this a value by divided the change in the y-values with the change in the x-values. say we could take Tan(A) from our snazzy drawing, then we get the change in y-values divided by the change x-values, being |BC| / |AC|. opposite over adjacant.

Sin = Opposite / hypotenuse and Cos = Adjacant / hypotenuse:
i just remember this by the definition of Sine, it spits out the Y-value of the point where the radius touches the circles edge.  This is also how i remember cos, since it spits out the x-value.

[snapback]41749[/snapback]

You realize that you basicly just told him to remember TOA SOH CAH...

Title: Congratulations IntensityRising
Post by: Malevolent on February 26, 2005, 08:39:20 AM

But he has an ASCII triangle!

Title: Congratulations IntensityRising
Post by: duherman on February 26, 2005, 08:40:36 AM

I wrote Soh Cah Toa on my calculator, I wonder if that's considered cheating on the test.

Title: Congratulations IntensityRising
Post by: Clashen on February 26, 2005, 08:41:39 AM

We just finished that stuff, it's really easy. But the  things that comes after  it is WAY more easy, way way way.

And we got a book with all the formulas, we can have it with us to the tests and everything :))


EDIT: And yea, put EVERYTHING you can in your calculator. It's great to have on tests.

Title: Congratulations IntensityRising
Post by: Dirty Harry Potter on February 26, 2005, 12:36:37 PM

Quote

I wrote Soh Cah Toa on my calculator, I wonder if that's considered cheating on the test.

[snapback]41771[/snapback]

i'd count that as notes, depending on if that is allowed or not it would be cheating.

@swift.... no, no i didn't. SOH CAH and TOA is just a sentence, which you can try and remember. What i said is based on if you know what Tan, Sine and Cosine spits out, which is based on the definition of them.

Title: Congratulations IntensityRising
Post by: LowCrawler on February 26, 2005, 01:10:17 PM

we had something like that.. if orgot the middle part but our teacher taught us


Some Old Hippes ______ Trippin On Acid

Title: Congratulations IntensityRising
Post by: Rath on February 26, 2005, 09:34:07 PM

I'm to the point in calculus where I have like 50 lines of notes typed into my calculator.  :ph34r:

Title: Congratulations IntensityRising
Post by: duherman on February 26, 2005, 10:54:34 PM

lol 50?

Title: Congratulations IntensityRising
Post by: SlickWill on February 27, 2005, 04:08:59 AM

Trig is not the easiest math ever once it get into the realms of theoretical integrals (integrals which don't exist and you can only use trig to solve.)   If you don't thinks so, you mya feel free to some to my College and take Calc 2 with Dr. Szecsei, the hardest class I have ever taken.

Title: Congratulations IntensityRising
Post by: Manta on February 27, 2005, 07:23:25 AM

Urgh, beginning trig is so easy if you memorize stuff, but it gets boring. Then it gets worse.

Title: Congratulations IntensityRising
Post by: Legionnaired on February 27, 2005, 08:04:56 AM

Wait until you have to integrate(cot^2csc(theta)dtheta)

Title: Congratulations IntensityRising
Post by: Keyser59 on February 27, 2005, 08:57:14 AM

Quote

Urgh, beginning trig is so easy if you memorize stuff, but it gets boring. Then it gets worse.

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Practically you would never have to solve that, *ahemcomputersahem*.

Title: Congratulations IntensityRising
Post by: Owen on February 27, 2005, 09:19:40 AM

Quote

Mmm.. Trigonometry. The EASIEST unit in math. Ever.

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sorry... but i found algebra pretty effing easy

Title: Congratulations IntensityRising
Post by: duherman on February 27, 2005, 11:26:41 AM

Algebra is very easy. I'm not too sure what Algebra is....

Title: Congratulations IntensityRising
Post by: Zero7 on February 27, 2005, 05:55:40 PM

Sorry, what? your last statement made absolutely no sense.

Title: Congratulations IntensityRising
Post by: Malevolent on February 27, 2005, 08:50:59 PM

Yeah, I agree with Zero on that last statement.

And yeah, you do memorize a lot of stuff in trig. And I think memorizing things is retarded (but that is why you should try to find out where stuff comes from; then you don't have to memorize). Memorizing leads to boring.

IR: SOHCAHTOA is basically the most basic thing you memorize in trig.

Title: Congratulations IntensityRising
Post by: duherman on February 27, 2005, 10:35:06 PM

So you're saying theres more?

Title: Congratulations IntensityRising
Post by: Dark on February 27, 2005, 10:57:28 PM

oh heck ya there is more but i don't know when you will hit the extra stuff

Title: Congratulations IntensityRising
Post by: Dirty Harry Potter on February 28, 2005, 06:42:37 AM

Intensity rising, SOH CAH and TOA only works on triangles that has an angle on 90degrees. There are also Sine and Cosine thingies which applies to every triangle.

Sine:
Sin(A)/a = Sin(B)/b = Sin©/c
This can be used to calculate other sidelenghts or other angles if you know a pair(ex. A and a) and then one part of another pair(ex. just C, but not c).

Cosine:
c^2 = a^2 + b^2 - 2abcos©
can be used to calculate a side opposite of an angle, where you know the two adjacant sides. and also to calculate an angle if you know all 3 sides.

- basically you can calculate every parts of the triangle if you know 3 other parts, with the exception of you only knowing the angles.

Title: Congratulations IntensityRising
Post by: Ulatoh on February 28, 2005, 07:29:54 AM

Quote

Quote

I wrote Soh Cah Toa on my calculator, I wonder if that's considered cheating on the test.

[snapback]41771[/snapback]

i'd count that as notes, depending on if that is allowed or not it would be cheating.

@swift.... no, no i didn't. SOH CAH and TOA is just a sentence, which you can try and remember. What i said is based on if you know what Tan, Sine and Cosine spits out, which is based on the definition of them.

[snapback]41787[/snapback]

Some Old Hippie Caught Another Hippie Tripping On Acid