1+sin2x/cos2x=(sin²x+cos²x+2sinxcosx)/(cos²x-sin²x)=(cosx+sinx)²/(cosx+sinx)(cosx-sinx)=(cosx+sinx)/(cosx-sinx)上下除cosx且 sinx/cosx=tanx=(1+tanx)/(1-tanx)=-3 cos2xsinx化简是什么? cosx-2sinx =√5 ((√5/5)cosx-(2√5/5)sinx) =√5(cosxsina-sinxcosa)...
sinxcosxcos2x =1/2×（2sinxcosx）cos2x =1/2sin2xcos2x 二倍角公式 =1/4（2sin2xcos2x）=（sin4x）/4
sinxcosxcos2x =1/2*2sinxcosxcos2x =1/2*sin2xcos2x =1/4*2sin2xcos2x =1/4*sin4x =sin4x/4 【中学生数理化】团队为您解答！祝您学习进步 不明白可以追问！满意请点击下面的【选为满意回答】按钮，O(∩_∩)O谢谢
百度试题 结果1 题目【题目】化简sinxcos xcos 2x 相关知识点: 试题来源: 解析 【解析】sinxcosxcos2x=1/2*(2sinxcosx)cos2x=1/2sin2xcos2x= sin2xco 2x故答案为:1/4sin4x
百度试题 结果1 题目化简:cosxsinxcos2x 一定要过程(要用2倍角公式解题) 相关知识点: 试题来源: 解析 =1/2*sin2xcos2x =1/4*sin4x
百度试题 结果1 题目化简:sinxcosxcos2x.相关知识点: 试题来源: 解析 原式=sinxcosxcos2x= 1 2sin2xcos2x= 1 4sin4x, 综上所述,结论为:化简结果为 1 4sin4x
sinx cosx cos2x =0.5(2sinxcosx)cos2x =0.5(sin2xcos2x)=0.5×0.5sin4x =(1/4)×sin4x
解析 解:sinxcosxcos2x =1/2sin2x⋅cos2x =1/4sin4x结果一 题目 sinxcosxcos2x(化简)详细点哦! 答案 sinxcosxcos2x=1/2×(2sinxcosx)cos2x=1/2sin2xcos2x 二倍角公式=1/4(2sin2xcos2x)=(sin4x)/4相关推荐 1sinxcosxcos2x(化简)详细点哦!
化简sinxcosxcos2x 相关知识点: 试题来源: 解析 sinxcosxcos2x=1/2*2sinxcosxcos2x=1/2*sin2xcos2x=1/4*2sin2xcos2x=1/4*sin4x=sin4x/4结果一 题目 化简sinxcosxcos2x 答案 sinxcosxcos2x =1/2*2sinxcosxcos2x =1/2*sin2xcos2x =1/4*2sin2xcos2x =1/4*sin4x =sin4x/4 结果二 题...