根号2sinπ/32*cosπ/32*cosπ/16*cosπ/18 怎么化简

问题描述:

根号2sinπ/32*cosπ/32*cosπ/16*cosπ/18 怎么化简
1个回答 分类:数学 2014-09-18

问题解答:

我来补答
最后是π/8吧
2sinπ/32*cosπ/32*cosπ/16*cosπ/8
=sinπ/16*cosπ/16*cosπ/8
=(1/2)sinπ/8cosπ/8
=(1/4)sinπ/4
=(√2)/8
 
 
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