化简：tan(18°－x)tan(12°＋x)＋[tan(18°－x)＋tan(12°＋x)]＝ 国语站 题库 9.12K 大中小设置文字大小 问题详情：化简：tan(18°－x)tan(12°＋x)＋[tan(18°－x)＋tan(12°＋x)]＝________．【回答】1知识点：三角恒等变换题型：填空题 TAG标签：tan18 tan12 化简 xtan12 #
![化简：tan(18°－x)tan(12°＋x)＋[tan(18°－x)＋tan(12°＋x)]＝](https://i1.guoyuzhan.com/8d564b1d35eee34807/8c464006/825215/d706125f61b6a0401592cb.gif "化简：tan(18°－x)tan(12°＋x)＋[tan(18°－x)＋tan(12°＋x)]＝"){kind=small}
[tan(18°－x)＋tan(12°＋x)]＝________．[tan(18°－x)＋tan(12°＋x)]＝________．
