Miller Electric

Welding Discussion Forums

Home » Resources » Communities » Welding Discussion Forums
 
Miller Welding Discussion Forums - Powered by vBulletin

Page 3 of 3 FirstFirst 123
Results 21 to 29 of 29
  1. #21
    Join Date
    Dec 2005
    Location
    San Diego, CA
    Posts
    168

    Default Oscar Has A Hat On Always

    I believe this is Navy trick to remember the trig functions, I'll try to explain, hopefully without pictures.

    1. the trig functions apply to right triangles, (one 90 deg corner)
    2. the leg opposite the right angle is always the hypotenuse.
    3. from either the other 2 corners, the leg forming one side is adjacent
    4. the other is the opposite.

    with that in mind, take the first letter from the punch line to remember the trig function. sine = opp(Oscar)/hyp(Has), cos=adj(A)/hyp(Hat), tan=opp(On)/adj(Always)

    So if you can remember sin,cos,tan and the Oscar Has A Hat On Always, a $5 scientific calculator and a scrap of paper you're in business.

    For those more shop minded Hard is sometimes substituted with Hat
    Frank
    (aka Fred)
    MM200 (antique and still cook'n)
    Lincoln 160 buzzzzzz box - left to live with a nice youngster
    Dynasty 300DX
    Spectrum 625
    Chevalier Knee Mill - Bridgeport clone you idiot.
    Homebuilt tube bender - with home made dies no less
    Delta Drill Press & Grinder collection

    Needed - a bigger shop to use the stuff

  2. #22
    Join Date
    Dec 2009
    Posts
    9

    Default

    Or this might work - Oley Had (Sine) A Hairy (Cosine) Old Arm (Tangant)
    Seemed to stick from highschool.

    Another one on litmus paper - BRA (Blue to Red = Acid)
    Hypertherm Powermax 45 PLASMA'r, Lincoln SP-100 MIGGER on gas, Lincoln 175 AC/DC Sq Wave TIGGER, Lincoln 225/125 AC/DC STICKER, 7" x 12" Horiz/Vert Band SAWER, Central 16" - 16 speed Drill PRESSER, Sanborn 3HP 20Gal Air COMPRESSOR, Dayton 9" disk - 6 x 48 Belt SANDER, Sears 8" Pedestal GRINDER, Victor O/A Torch BURNER, 150amp service to the 40'x64' Pole Barn - Priceless

  3. #23
    Join Date
    Jan 2008
    Location
    So. Cal
    Posts
    100

    Default

    Here's an old school one for the boys

    Oscar Had Another Hard On Again
    Sine Cosine Tangent

    I forgot the one for girls
    Last edited by FabTech; 01-26-2010 at 01:34 PM.
    Fab Tech

  4. #24
    Join Date
    Jul 2009
    Location
    New York New York
    Posts
    46

    Default

    The one we learned in school is just some Indian name or something

    SOA CAH TOA something pronounced like "soo cah toe"

  5. #25
    Join Date
    Feb 2008
    Posts
    889

    Default

    Quote Originally Posted by XLMFAB View Post
    Thanks for all the replies. Im trying to save to got to welding school so I can eventually answer my own questions.
    I think you'll be disappointed if you go into a welding program expecting to master geometry and trigonometry.

    As for remembering mnemonics for solving certain triangles... forget about words. Just learn the simplest trigonometric figure. The unit circle.



    The radius is 1, so the hypotenuse is always 1. Makes things easy. Note that the point on the circle has an X coordinate equal to the cosine of the angle. It has a Y coordinate equal to the sine of the angle. And the slope of the hypotenuse is analogous to the tangent of the angle... which is rise over run (everybody knows slope is rise over run - even roofers). And rise over run happens to be Y/X.

    The more you learn about trigonometry and higher math, the more you realize this circle is the ultimate cheat sheet. It tells you the formulas to everything.

    80% of failures are from 20% of causes
    Never compromise your principles today in the name of furthering them in the future.
    "All I ever wanted was an honest week's pay for an honest day's work." -Sgt. Bilko
    "We are generally better persuaded by reasons we discover ourselves than by those given to us by others." -Pascal
    "Since we cannot know all that there is to be known about anything, we ought to know a little about everything." -Pascal

  6. #26
    Join Date
    Feb 2009
    Location
    Island Falls Maine
    Posts
    562

    Default

    We made a set one time but we made it with 16''x 16'' hardwood saw logs.
    Just an idea

  7. #27
    Join Date
    Oct 2008
    Location
    taxachussetts
    Posts
    416

    Default

    from the ramps i see i hope your idea of a heavy truck is just a one ton? i think heavy truck I'm thinking 60,000 empty. it's great to see all the math but it needs to hold the weight. please post a pic if one ramp collapses. think about it.
    TB 325
    TB 302
    dynasty 200sd
    spoolmatic 30a/wc24
    suitcase x-treme 12vs
    miller 211
    evolution rage 2

  8. #28
    Join Date
    May 2008
    Location
    OCEANSIDE, CA
    Posts
    123

    Default

    Quote Originally Posted by Fred Smith View Post
    I believe this is Navy trick to remember the trig functions, I'll try to explain, hopefully without pictures.

    1. the trig functions apply to right triangles, (one 90 deg corner)
    Sort of... Law of Cosines and Law of Sines apply to solving remaining angles and lengths of non right triangles as well, but like Bodybagger said the unit circle is a giveaway for right angles. We always used the "Soak A toe A" SOH CAH TOA mnemonic.

    SOH = Sine = Opposite over Hypotenuse
    CAH = Cosine = Adjacent over Hypotenuse
    TOA = Tangent = Opposite over Adjacent

    It's really all about ratios just like the unit circle, but it's also about using what information you do have to solve for what you do not.
    DYNASTY 200SD
    COOLMATE 1
    MM140AS
    SPOOLMATE 100
    SPECTRUM 625 X-TREME
    SPECTRUM 125C

  9. #29
    Join Date
    Dec 2009
    Posts
    7

    Default No trigonometry needed

    If you subtract 4 feet from the top and the bottom, you get a right angled triangle where the base is 8 feet (a) and the height is 2 ' 6" (b). The side you want is the hypotenuse (c). So, if you use the Pythagorean Theorem:

    (a*a)+(b*b)=(c*c) or (a squared) + (b squared) = (c squared)

    Then you get:

    c = square root ((a*a)+(b*b)).

    In this case, convert the feet to inches
    a=8*12=96
    b=2*12+6=30

    c=square root ((96*96)+(30*30))
    =square root (9216+900)
    =square root (10116)
    =100.5783 inches
    =8.3815 feet = approximately 8 feet and 4 37/64 inches (almost 8' 4 9/16")

    Hope this makes sense

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  

Warning: Function split() is deprecated in /mnt/stor3-wc1-dfw1/357822/357839/www.millerwelds.com/web/content/lib/footer.inc.php on line 82

Welding Projects

Special Offers: See the latest Miller deals and promotions.