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Tangent - Wikipedia
 
In geometry, the tangent line (or simply tangent) to a plane curve at a given point is, intuitively, the straight line that "just touches" the curve at that point. 
  
Sine, Cosine and Tangent - Math is Fun
 
Sine, Cosine and Tangent are the main functions used in Trigonometry and are based on a Right-Angled Triangle. Before getting stuck into the functions, it helps to give a name to each side of a right triangle: Opposite is always opposite the angle. And Adjacent is always next to the angle. 
  
TANGENT Definition & Meaning - Merriam-Webster
 
The meaning of TANGENT is an abrupt change of course : digression. How to use tangent in a sentence. 
  
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, Formulas, & Facts | Britannica
 
The tangent is one of the six fundamental trigonometric functions in mathematics. In a right triangle, it is the ratio of the length of the side opposite a given angle to the length of the side adjacent to that angle. 
  
TANGENT | English meaning - Cambridge Dictionary
 
Idiom go off on a tangent (Definition of tangent from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press) 
  
Tangent Formulas - GeeksforGeeks
 
Tangent of an angle in a right-angled triangle is the ratio of the length of the opposite side to the length of the adjacent side to the given angle. We write a tangent function as "tan". 
  
Trigonometric Functions - Definition, Formula, Table, Identities, and ...
 
There are six trigonometric functions, of which sine, cosine, and tangent functions are basic functions, while secant (sec), cosecant (cosec or csc), and cotangent (cot) are derived from the three basic functions. 
  
Tangent Formula - What Are Tangent Formulas? Examples - Cuemath
 
There are multiple formulas related to tangent function which can be derived from various trigonometric identities and formulas. Let us learn the tangent formulas along with a few solved examples. 
  
Trigonometric functions - Wikipedia
 
The trigonometric functions most widely used in modern mathematics are the sine, the cosine, and the tangent functions. Their reciprocals are respectively the cosecant, the secant, and the cotangent functions, which are less used. 
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