cos105°等于多少
IT之家 4 月 10 日消息，荣耀官方现公布了 MagicOS 7.0 的升级最新进展！
荣耀 Magic 系列、数字系列、荣耀 X40GT 等机型正式版本已推送，荣耀 V40 轻奢版、荣耀 X40、荣耀 X30 内测招募正在进行中！更多可通过荣耀俱乐部查看。
有IT之家用户反馈，荣耀 V40 轻奢版上周推送了最新的 7.0.0.105 版本，此次更新优化部分场景的相机使用体验，优化系统与部分三方应用的兼容性，备忘录全面升级为荣耀笔记，提升系统稳定性，合入安全补丁。
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叶古竿3899cos105度是多少 -
顾栏炊15837331507 ______ cos105度=-0.2588190451cos105=cos(45+60) =cos45cos60-sin45sin60 =√2/2x1/2-√2/2x√3/2=(√2-√6)/4朋友,请采纳正确答案,你们只提问,不采纳正确答案,回答都没有劲!!!朋友,请【采纳答案】,您的采纳是我答题的动力,如果没有明白,请追问.谢谢.
叶古竿3899cos105°等于 -
顾栏炊15837331507 ______ 等于二分之跟二乘以(二分之一减二分之根号三)
叶古竿3899cos105°用(和)差角公式求三角函数的值 -
顾栏炊15837331507 ______[答案] cos 105° =cos(45°+60°) =cos45°*cos60°-sin45°*sin60° =√2/2*1/2-√2/2*√3/2 =√2/4-√6/4 =(√2-√6)/4
叶古竿3899cos105°的值是多少 -
顾栏炊15837331507 ______ cos105° =cos(60°+45°) =cos60°cos45°-sin60°sin45° =-4分之(根号6-根号2)
叶古竿3899cos105°等于多少 -
顾栏炊15837331507 ______ 等于二分之跟二乘以(二分之一减二分之根号三)
叶古竿3899cos15°cos105°=? -
顾栏炊15837331507 ______[答案] cos15°cos105° =cos15°cos(180-75°) =-cos15°cos75° =-cos15°sin15° =-(1/2)sin30 =-1/4
叶古竿3899cos15度和tan105度各等于多少快 -
顾栏炊15837331507 ______[答案] cos15°=cos(45°-30°)==cos(45)cos(30)+sin(45)sin(30)=(√6+√2)/4tan105°=tan(60°+45°)==(tan45+tan60)/(1-tan45tan60)=(1+√3)/(1-1*√3)=-2-√3
叶古竿3899两角差的余弦的计算题、、急...cos105°=cos165°=cos(5π/12)=cos(17π/12)=cos70°cos40°+sin70°sin40°=cos100°cos20° - sin100°sin20°= -
顾栏炊15837331507 ______[答案] cos105°= cos(45°+60°)=cos45°cos60°-sin45°*sin60°=√2/4-√6/4=(√2-√6)/4 cos165°=cos(45°+120°)=cos45°cos120°-sin45°sin120°=-√2/4-√6/4=-(√2+√6)/4 cos(5π/12)= cos(π/6+π/4)=cosπ/6cosπ/4-sinπ/6sinπ/4=√6/4-√2/4=(√6-√2)/4 cos(...
叶古竿3899cos 105°cos15°怎么做 -
顾栏炊15837331507 ______[答案] cos 105°=cos(45°+60°)=cos45°*cos60°-sin45°*sin60°=(-根号6+根号2)/4 cos15°=cos(45°-30°)=cos45°cos30°+sin45°sin30°=(根号6+根号2)/4
叶古竿3899sin105°cos105°的值为______. -
顾栏炊15837331507 ______[答案] sin105°cos105° =sin(60°+45°)cos(60°+45°) =(sin60°cos45°+cos60°sin45°)(cos60°cos45°-sin60°sin45°) =( 3 2* 2 2+ 1 2* 2 2)( 1 2* 2 2- 3 2* 2 2)=- 1 4 故答案为- 1 4.