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Math help needed

Discussion in 'The Hokey Ass Message Board' started by 57JoeFoMoPar, Aug 21, 2006.

  1. 57JoeFoMoPar
    Joined: Sep 14, 2004
    Posts: 5,021

    57JoeFoMoPar
    Member

    OK, so I'm in the process of Z'ing the frame in my shop truck and I need some help with this right angle Trigonometry to cut the new rails correctly. This isn't a hard problem to someone who knows the laws of sines and cosines (Sin=opposite/hypotenuse, Cos=adjacent/hypotenuse, Tan= opposite/adjacent), but I can't find my graphing calculator and I forget how to set the problem up anyhow. Any help finding angle X and angle Y would be greatly appreciated.
     

    Attached Files:

  2. Darby
    Joined: Sep 12, 2004
    Posts: 426

    Darby
    Member

    y is 31.3
    x is 58.7
     
  3. hayduke
    Joined: Apr 1, 2006
    Posts: 239

    hayduke
    Member

  4. 57JoeFoMoPar
    Joined: Sep 14, 2004
    Posts: 5,021

    57JoeFoMoPar
    Member

    Thanks alot guys. I just figured out how to get the inverse sines using the microsoft calulator and checked myself with your numbers. right on the money, thanks again.
     

  5. squirrel
    Joined: Sep 23, 2004
    Posts: 49,290

    squirrel
    Member

    what ever happened to drawing it full size on the garage floor with a Sharpie?
     
  6. T2B
    Joined: Jul 21, 2006
    Posts: 17

    T2B
    Member
    from san diego

    Everyone got tired of cleaning the floor.
     
  7. butch27
    Joined: Dec 10, 2004
    Posts: 2,847

    butch27
    Member

    Yeah: I saw that movie "Signs" too ( with Mel Gibson) great movie!
     
  8. HemiRambler
    Joined: Aug 26, 2005
    Posts: 4,208

    HemiRambler
    Member

    Wasn't the famous Indian Soh-Cah-Toa really good at this math stuff???
     
  9. lolife
    Joined: May 23, 2006
    Posts: 1,125

    lolife
    Member

    The sine angle is nice to know, but don't get too worked-up at keeping 2 decimal places of accuracy. Remember, you are using a filler metal when welding, so fill ;)
     
  10. BobbyD
    Joined: Jun 6, 2005
    Posts: 581

    BobbyD
    Member
    from Belmont NC

    Cut both pieces 22.5 degree's and they'll always fit right, if your using something like 2X3 square tube, or the like, at least for a 45 degree joint. I funked the hell outa Trig in HS. Wish I'd have paid more attention now.....
     
  11. spoons
    Joined: Jan 1, 2004
    Posts: 1,738

    spoons
    Member
    from ohio

    Thanks for that post, It helped me remember how to do it...

    Spoons
     

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