天气预报 > 其他 > sin30度等于多少
sin30度等于多少
更新时间: 2020-07-10 00:00:00  

古代说的“勾三股四弦五”中的“弦”,就是直角三角形中的斜边,“勾”、“股”是直角三角形的两条直角边;

正弦是股与弦的比例,余弦是余下的那条直角边与弦的比例。

关键词: sin30 等于 多少

sin30度等于多少相关经验

天气预报

最新推荐

页面:/news/view-1812026/ | 耗时:0.8005 s | 内存:2.11 MB | 查询:4 | 缓存读取:3 写入:0 | 加载文件:25
select * from tbl_Articles WHERE ArticleID=1812026 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=1812026 LIMIT 0,1
select * from tbl_Articles_sphinx where id=1812026 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(512714,138764,2754668,881432,269423,424209,251910,386964,228181,718256,1116387,141325,316375,1120522,926415,960266,243307,679887,785366,328403,3292425,328100,265220,839608,2334102,1052911,2901054,142765,328444,325629) ORDER BY field (ArticleID,512714,138764,2754668,881432,269423,424209,251910,386964,228181,718256,1116387,141325,316375,1120522,926415,960266,243307,679887,785366,328403,3292425,328100,265220,839608,2334102,1052911,2901054,142765,328444,325629)