2023-07-25 19:45发布
#p#因为tanα2,所以sin2α=2sinαcosα=2sinαcosα/(sinα+cosα)=2tanα/(1+tanα)=4/5cos2α=cosα-
最多设置5个标签!
{var%20f='http://v.t.sina.com.cn/share/share.php?appkey=1515056452',u=z||d.location,p=['&url=',e(u),'&title=',e(t||d.title),'&source=',e(r),'&sourceUrl=',e(l),'&content=',c||'gb2312','&pic=',e(p||'')].join('');function%20a(){if(!window.open([f,p].join(''),'mb',['toolbar=0,status=0,resizable=1,width=440,height=430,left=',(s.width-440)/2,',top=',(s.height-430)/2].join('')))u.href=[f,p].join('');};if(/Firefox/.test(navigator.userAgent))setTimeout(a,0);else%20a();})(screen,document,encodeURIComponent,'','','http://hwaiwenda.com/data/attach/logo/logo.png', '推荐 的问题《若tanα=2,求sin2α和cos2α和值》','https://hwaiwenda.com/answer/14542/33161.html','页面编码gb2312|utf-8默认gb2312'));){kind=link}
一周热门 更多>