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- 正切 - 维基百科，自由的百科全书
正切 正切 （Tangent， tan {\displaystyle \tan } ，东欧国家将其写作tg）是 三角函数 的一种。 它的 值域 是整个 实数集， 定义域 落在 { x | x ≠ k π + π 2 , k ∈ Z } {\displaystyle \left\ {x|x\neq k\pi + {\tfrac {\pi } {2}},k\in \mathbb {Z} \right\}} （
- Tangent - Math. net
The graph of tangent is periodic, meaning that it repeats itself indefinitely Unlike sine and cosine however, tangent has asymptotes separating each of its periods
- Tangent — Definition, Formula Examples - Mathwords
Tangent appears constantly in geometry, physics, and engineering whenever you need to relate vertical and horizontal distances For example, if you know the angle of elevation to the top of a building and your distance from it, tangent lets you calculate the building's height
- Tangent to Circle, Meaning, Properties, Examples - Cuemath
Tangent in geometry is defined as a line or plane that touches a curve or a curved surface at exactly one point Learn about tangent definition along with properties and theorems
- Tangent in trigonometry made simple - Andrea Minini
The word "tangent" comes from the Latin "tangere," meaning "to touch " Geometrically, the tangent is a line segment perpendicular to the x-axis, originating at point C and intersecting the extended side OP
- Tangent -- from Wolfram MathWorld
The word "tangent" also has an important related meaning as a line or plane which touches a given curve or solid at a single point These geometrical objects are then called a tangent line or tangent plane, respectively
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