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Math Help - Can anyone help with a linear alg problem

  1. #1
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    Can anyone help with a linear alg problem

    The problem is in the attachment. (a matrix involve trigonometry). I wonder if anybody can help!

    yybn
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  2. #2
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    Look at the case where \theta _1  = 0\;\& \,\theta _2  = \frac{\pi }{2}
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  3. #3
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    Thanks Plato

    Thanks! Plato

    This sounds a very good idea to start. But could you give me a more general proof? ( the formula to be used are:
    sin(X+Y)= sin (X)cos(Y)+cos(X)sin (Y)
    cos(X+Y)=cos(X)cos(Y)-sin(X)sin(Y)

    Thanks a lot!

    yybn
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