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Homework Help: Sinx and cosx functions

  1. Apr 2, 2007 #1

    Ry122

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    What differences is there between a sinx and cosx function?
    Do they both use this equation?
    y=Asin(BX+C)+D
     
    Ry122, Apr 2, 2007
  2. jcsd
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  3. Apr 2, 2007 #2

    cristo

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    cristo, Apr 2, 2007
  4. Apr 2, 2007 #3

    Ry122

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    That's too in depth for me.
    I just wanted to know the difference between
    y=sinx and y=cosx when graphed.
     
    Ry122, Apr 2, 2007
  5. Apr 2, 2007 #4

    cristo

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    Ok, try this: http://faculty.ed.umuc.edu/~swalsh/Math%20Articles/Graphing%20Sin%20Cos.html [Broken]
     
    Last edited by a moderator: May 2, 2017
    cristo, Apr 2, 2007
  6. Apr 3, 2007 #5

    Gib Z

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    Maybe cristo just missed it, but Ry122 is actually right, cosine can also be expressed in that form of asin(bx+c) + d.

    This happens because sin (90degrees-x)= cos x.

    So in answer to your original question, the difference when graphed between sin x and cos x is that the cos graph is the same as sins, moved back 90 degrees to the left.
     
    Gib Z, Apr 3, 2007
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