Which of the following is correct? math

来源：百度知道编辑：UC知道时间：2024/05/12 13:01:39

(a) sin(.1) < sin(.1)cos(.1) < cos(.1)
(b) sin(.1) < cos(.1) < sin(.1)cos(.1)
(c) cos(.1) < sin(.1)cos(.1) < sin(.1)
(d) cos(.1) < sin(.1) < sin(.1)cos(.1)
(e) sin(.1)cos(.1) < sin(.1) < cos(.1)

很明显该选E嘛；

人家题干说的是sin（.1），就是sin（0.1）的缩写

在0．1处有cos（0.1）即cos（.1）＞sin（.1）

又因为cos（．1）＜1，所以在sin（．1）上乘以cos（．1）是乘上了个小于1的数，故sin(.1)cos(.1) < sin(.1) < cos(.1)

你别告诉我你那是sin(1)或是一种从来没人见过的记数方式!

sin(.1)cos(.1) < cos(.1) < sin(.1)
注：π/4<1<π/2，所以cos(.1) < sin(.1)<1

这没对的呀！应该是)sin(.1)cos(.1) < cos(.1) < sin(.1)

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