Ответ:
Sin8α∗1+Cos4αCos4α∗1−Cos4αSin4α=1+Cos8αSin8α∗1−Cos24α0,5Sin8α=(1+Cos8α)Sin24α0,5Sin28α=2Cos24α∗Sin24α0,5Sin28α=0,5Sin28α0,5Sin28α=1
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Ответ:
Sin8α∗1+Cos4αCos4α∗1−Cos4αSin4α=1+Cos8αSin8α∗1−Cos24α0,5Sin8α=(1+Cos8α)Sin24α0,5Sin28α=2Cos24α∗Sin24α0,5Sin28α=0,5Sin28α0,5Sin28α=1