tangent

英 [ˈtændʒənt]

美 [ˈtændʒənt]

n. 切线; 正切

复数：tangents　

BNC.21952 / COCA.24421

习惯用语

fly/go off at a tangent

突然转换话题；突然改变行动
to suddenly start saying or doing sth that does not seem to be connected to what has gone before

noun

切线
a straight line that touches the outside of a curve but does not cross it
正切
the ratio of the length of the side opposite an angle in a right-angled triangle to the length of the side next to it

切线
Atangentis a line that touches the edge of a curve or circle at one point, but does not cross it.
PHRASE 突然偏离原来的思路;突然离题
If someonegoes off at a tangent, they start saying or doing something that is not directly connected with what they were saying or doing before.
1. The conversation went off at a tangent.
  交谈突然偏离了正题。

noun

ratio of the opposite to the adjacent side of a right-angled triangle
Synonym:tan
a straight line or plane that touches a curve or curved surface at a point but does not intersect it at that point

Returns the hyperbolic tangent of the specified angle.
返回指定角度的双曲正切值。
This paper discusses cubic algebraic curves with the given tangent polygon.
文章论述了与给定切线多边形相切的三次代数曲线；
But, actually, that is not true because here the circle is tangent to the axis.
但实际上，这是不对的，因为这个圆与这个坐标轴相切。
Then, if I choose any vector in that tangent plane.
那么如果我选择了任何位于切平面的向量。
The atanh() function returns the inverse hyperbolic tangent of an angle.
函数的作用是：返回一个指定角度参数所对应的反双曲正切值。
If we were moving on the tangent plane, this would be an actual equality.
如果我们在切平面上移动，这将会是一个真正的等式。
Drag to add 2 circles with tangent connecting opposite sides. Complementary tangent line can be shown.
拖动此形状，可添加切线与相对圆边相连的两个圆。可以显示互补的切线。
The line connecting the point and the center bisects the included angle of the two tangent lines.
这一点和圆心的连线平分这两条切线的夹角。
The first two order radial and tangent displacement modes of pipe are acquired.
对管道进行数值模拟，提取前两阶径向和切向位移模态。
For? 0 we naturally get a circle; for? 0 we obtain two tangent circles.
对？0我们当然得到一个圆；对？0得到两个相切的圆。