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Trigonometric functions - Wikipedia
The trigonometric functions most commonly 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 commonly used.
Cotangent | Definition, Formulas, & Facts | Britannica
cotangent, one of the six trigonometric functions, which, in a right triangle ABC, for an angle A, is cot A = length of side adjacent to angle A/ length of side opposite angle A.
Cotangent - Formula, Graph, Domain, Range | Cot x Formula
The cotangent of an angle in a right triangle is defined as the ratio of the adjacent side (the side adjacent to the angle) to the opposite side (the side opposite to the angle).
Tangent and Cotangent - Algebrica
Tangent and cotangent are trigonometric functions defined as the ratios of sine and cosine of an angle. They admit geometric interpretations on the unit circle, exhibit periodic behavior, and play a fundamental role in trigonometry, analytic geometry, and the study of complex numbers.
Trigonometric Identities - Math is Fun
The three main functions in trigonometry are Sine, Cosine and Tangent. They are just the length of one side divided by another. For a right triangle with an angle θ : When we divide Sine by Cosine we get: So we can say: That's our first Trigonometric Identity.
Cotangent in Trigonometry Explained Simply - Andrea Minini
Since the cotangent is a periodic function with a period of π, it can be studied within the interval (0, π). In this interval, the cotangent is a continuous, monotonic, and decreasing function.
Cotangent -- from Wolfram MathWorld
The cotangent is implemented in the Wolfram Language as Cot [z]. The notations ctnz (Erdélyi et al. 1981, p. 7; Jeffrey 2000, p. 111) and ctgz (Gradshteyn and Ryzhik 2000, p. xxix) are sometimes used in place of cotz.
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