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sin(t) - cos(t) can be rewritten as ? - The answer is sqrt(2)cos(3PI/4 - t).

there is an equation Re^(xt)cos(bt - angle).

R = sqrt(A^2+B^2)

So i get the following answer:

sqrt(2)(cos(t - 3PI/4)).

Why does the correct answer have the 3PI/4 switched with the t??

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# Sin(t) - cos(t) can be rewritten as?

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