Question

高一三角函数（一步简单计算）答好加分

Answer 1

根号2sin(πx/8+π/4)+根号2cos(πx/8+π/4)=√2[sin(πx/8)cos(π/4)+cos(πx/8)sin(π/4)]+√2[cos(πx/8)cos(π/4)-sin(πx/8)sin(π/4)]=√2[sin(πx/8)(√2/2)+cos(πx/8)(√2/2)]+√2[cos(πx/8)(√2/2)-sin(...