1. go off at a tangent : (说话时)突然扯到题外, 突然背离原来的途径, 突然改变行径/思想；
名词
1. They changed their course to something like a tangent to the earth.
他们将航线改变为差不多与地球呈正切的方向。
1. 切线：在评选方式上,首先由世界上惟一致力于推介短篇科幻小说的<<切线>>(Tangent)杂志提出十到十二篇的候选名单,之后由评委会裁定出优胜者. 今年的大奖得主是卡革.贝克(Kage Baker)所著的<<火星女皇>>(The Empress of Mars).
2. 正切：这个数值往往是以[[三角函数]]的'''正切'''(tangent)的[[百分比]]数值来陈述,即'''爬升高度'''比'''在一个水平面上的移动距离'''. 除了正切百分比,还会直接标示斜坡垂直提升的'''角度''',甚至会使用'''正弦&
3. 正切函数：传回 Double 值,其中包含正切函数 (Tangent) 是指定数字的角度. 除此之外,.NET Framework 数学类别也提供三角、对数及其他常见数学函式的常数和其他静态 (Static) 方法. 这些都可在 Visual Basic 程式当中使用.
1. tangent的意思
1. 切线
A tangent is a line that touches the edge of a curve or circle at one point, but does not cross it.
2. 突然偏离原来的思路;突然离题
If someone goes off at a tangent, they start saying or doing something that is not directly connected with what they were saying or doing before.
e.g. The conversation went off at a tangent.
交谈突然偏离了正题。
1. If commonality of trends counts for anything, then Africa's emerging moment is on the same tangent as China's.
noun
1. ratio of the opposite to the adjacent side of a right-angled triangle
Synonym: tan
2. a straight line or plane that touches a curve or curved surface at a point but does not intersect it at that point