In trigonometry, the law of cotangents is a relationship among the lengths of the sides of a triangle and the cotangents of the halves of the three angles. [1][2]

The classical definition of the cotangent function for real arguments is: "the cotangent of an angle in a right‐angle triangle is the ratio of the length of the adjacent leg to the length to the opposite leg." This description of is valid for when the triangle is nondegenerate.

V pravoúhlém trojúhelníku bývá definována jako poměr odvěsny přilehlé a protilehlé. Pro označení této funkce se obvykle používá zkratka cotg a jejím grafem je kotangentoida. Funkce kotangens je definována vzorcem. což je převrácená podoba poměru, kterým je …

Mar 5, 2025 · The cotangent function is the function defined by. where is the tangent. The cotangent is implemented in the Wolfram Language as Cot [z]. The notations (Erdélyi et al. 1981, p. 7; Jeffrey 2000, p. 111) and (Gradshteyn and Ryzhik 2000, …

The classical definition of the cotangent function for real arguments is: "the cotangent of an angle in a right‐angle triangle is the ratio of the length of the adjacent leg to the length to the opposite leg." This description of is valid for when the triangle is nondegenerate.

Yes. cot x cot x is the reciprocal, arctan x arctan x is the (principal) inverse, and arctan x = 1tan x arctan x = 1 tan x is incorrect. There is a mistake. And the main problem is the notation. If we have a function f f that is 1-1 then we can think of it's inverse function f−1 f − 1.

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Mit dem Cotangens (auch Kotangens, abgekürzt cot oder cotan) kannst du in einem rechtwinkligen Dreieck fehlende Seiten und Winkel bestimmen. Der Cotangens eines Winkels x, geschrieben cot (x), ist dabei eine Zahl: Das Verhältnis zwischen Ankathete zu Gegenkathete.