Question: Is the answer given in the image wrong? no matter how I try to do it i either -3.05 or if I do -sin(3-2)-cos(3) =

 Is the answer given in the image wrong? no matter how

Is the answer given in the image wrong? no matter how I try to do it i either -3.05 or if I do -sin(3-2)-cos(3) = -1.02 Please show working out. Thanks in advance.

I try to do it i either -3.05 or if I do

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