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Homework Help: Linear Combination of Cosine Function

  1. Oct 16, 2005 #1
    How would I express cos(wt+1) as a linear combination of cos(wt) and sin(wt)?
     
  2. jcsd
  3. Oct 16, 2005 #2

    mathman

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    Science Advisor

    Basic formula: cos(x+y)=cos(x)cos(y)-sin(x)sin(y). You should be able to take it from there.
     
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