Express the given harmonic functions as Acos(wt-B) with lag phase B. (a) x(t)=-4coswt+7sinwt (b) y(t)=-4sinwt+7coswt .

Express the given harmonic functions as Acos(wt-B) with lag phase B. (a) x(t)=-4coswt+7sinwt (b) y(t)=-4sinwt+7coswt .

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Express the given harmonic functions as Acos(wt-B) with lag phase B. (a) x(t)=-4coswt+7sinwt (b) y(t)=-4sinwt+7coswt .

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