Math/Angle help?

Discussion in 'Coop & Run - Design, Construction, & Maintenance' started by Oceanseve, Apr 19, 2009.

  1. Oceanseve

    Oceanseve Songster

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    Guthrie, OK
    Okay I know I'm over thinking this, but humor me please?

    We are doing a slanted roof, so how do I figure the other two angles for my right triangle? 4' 6" wide and 18" tall.
     
    Last edited: Apr 19, 2009
  2. new-roo

    new-roo Scrambled

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    Quote:A right triangle has a 90 degree angle and 2 45 degree angles.
     
  3. Oceanseve

    Oceanseve Songster

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    Its been a while since my last geo class, but I thought that was only if the two legs were equal.....
     
  4. redoak

    redoak Songster

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  5. new-roo

    new-roo Scrambled

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    Quote:Right angle - Wikipedia, the free encyclopediaFeb 10, 2009 ... In geometry and trigonometry, a right angle is an angle of 90 degrees, corresponding to a quarter turn

    If you have a right triangle then the legs must be the same
     
    Last edited: Apr 19, 2009
  6. domino7

    domino7 Songster

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    N.E. Ohio
    Quote:Right angle - Wikipedia, the free encyclopediaFeb 10, 2009 ... In geometry and trigonometry, a right angle is an angle of 90 degrees, corresponding to a quarter turn

    If you have a right angle then the legs must be the same

    NOT TRUE
     
  7. Oceanseve

    Oceanseve Songster

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    Guthrie, OK
    I don't trust anything off wiki

    redoak - THANK YOU!!
     
    Last edited: Apr 19, 2009
  8. new-roo

    new-roo Scrambled

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    Quote:Right angle - Wikipedia, the free encyclopediaFeb 10, 2009 ... In geometry and trigonometry, a right angle is an angle of 90 degrees, corresponding to a quarter turn

    If you have a right angle then the legs must be the same

    NOT TRUE

    Too quick, I edited a right triagle has equal lengths in post above.
     
  9. Oceanseve

    Oceanseve Songster

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    Redoak - thanks again. I have to admit it makes me proud, the math I did before you posted that is almost dead on [​IMG] I still got it
     
  10. russ_t

    russ_t In the Brooder

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    rise/run = tan(x)
    so
    18/54 = tan(x)
    x = atan(0.333) = 18.43
     

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