设当x=θ时,函数f(x)=sinx-2cosx取得最大值,则cosθ=____ 发布时间:2017-04-22 12:13 │ 来源:www.tikuol.com 题型:填空题 问题: 设当x=θ时,函数f(x)=sinx-2cosx取得最大值,则cosθ=______
题型:填空题 If you are hunting chance to improve yourself in English, I think the English corner willbe ________smart choice.[ ]A. a; a B. a; the C. the; a D. the; the 查看答案