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(sina)^2+(cos(π/6))^2+sinacos(π/6)化简为?
题目详情
(sina)^2+(cos(π/6))^2+sinacos(π/6) 化简为?
▼优质解答
答案和解析
(sina)^2+(cos(π/6))^2+sinacos(π/6)=(sina)^2+(cos(π/6))^2+2sinacos(π/6)-sinacos(π/6)=(sina++cos(π/6))^2-sinacos(π/6)
=(sina+Г3/2)^2-(Г3/2sina)
=(sina+Г3/2)^2-(Г3/2sina)
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