问题标题:
(1-tan5π/12tanπ/4)/(tan5π/12+tanπ/4)的值
问题描述:
(1-tan5π/12tanπ/4)/(tan5π/12+tanπ/4)的值
钱存华回答:
原式=1/[(tan5π/12+tanπ/4)/(1-tan5π/12tanπ/4)]
=1/tan(5π/12+π/4)
=1/tan(2π/3)
=1/(-√3)
=-√3/3
查看更多
八字精批
八字合婚
八字起名
八字财运
2024运势
测终身运
姓名详批
结婚吉日