化简 √2/2 sinα+√2/2 cosα
问题描述:
化简 √2/2 sinα+√2/2 cosα
答
√2/2 sinα+√2/2 cosα= sinαcosπ/4+√cosαsinπ/4=sin(α+π/4)
化简 √2/2 sinα+√2/2 cosα
√2/2 sinα+√2/2 cosα= sinαcosπ/4+√cosαsinπ/4=sin(α+π/4)