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  1. Dictionary
    cosh
    /kɒʃ/

    noun

    • 1. a thick, heavy stick or bar used as a weapon: "the defendants deny having a self-loading pistol and a telescopic cosh"

    verb

    • 1. hit (someone) on the head with a cosh: "the other coshed him and he fell unconscious"

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  2. brilliant.org › wiki › double-angle-identitiesDouble Angle Identities | Brilliant Math & Science Wiki

    3 days ago · The trigonometric double angle formulas give a relationship between the basic trigonometric functions applied to twice an angle in terms of trigonometric functions of the angle itself. Tips for remembering the following formulas: We can substitute the values \ ( (2x)\) into the sum formulas for \ (\sin\) and \ (\cos.\)

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      Log In - Double Angle Identities | Brilliant Math & Science...

  3. en.wikipedia.org › wiki › Complex_numberComplex number - Wikipedia

    17 hours ago · Complex number. A complex number can be visually represented as a pair of numbers (a, b) forming a vector on a diagram called an Argand diagram, representing the complex plane. Re is the real axis, Im is the imaginary axis, and i is the "imaginary unit", that satisfies i2 = −1. In mathematics, a complex number is an element of a number system ...

  4. math.stackexchange.com › questions › 4941889Definite integral $\\int_b^\\infty...

    4 days ago · $$ I(a,b)=\int_b^\infty \frac{e^{-ax}}{\sqrt{\cosh{x}-\cosh{b}}}dx. $$ Does $I(a,b)$ have a closed-form expression (far-fetched hope)? If not, does it have a representation in terms of known special functions?

  5. quizlet.com › gb › 587638998hyperbolics FM Flashcards | Quizlet

    1 day ago · Study with Quizlet and memorise flashcards containing terms like what is coshx equal too?, what is sinhx equal too?, what is tanhx equal too? and others.

  6. www.vedantu.com › question-answer › if-cosh-x-sec-theta-thenIf $ \cosh (x) = \sec \theta $ , then $ {\tanh ^2}(\dfrac{x}{2})...

    4 days ago · The three main hyperbolic functions are sinhx, coshx and tanhx. Use the definition and identities of these functions to simplify them and you will also require the knowledge of trigonometric identities to find out the correct answer. Complete step-by-step answer: We are given that $ \cosh x = \sec \theta $

  7. en.wikipedia.org › wiki › Eigenvalues_and_eigenvectorsEigenvalues and eigenvectors - Wikipedia

    1 day ago · Overview. Eigenvalues and eigenvectors feature prominently in the analysis of linear transformations. The prefix eigen- is adopted from the German word eigen ( cognate with the English word own) for 'proper', 'characteristic', 'own'.

  8. en.wikipedia.org › wiki › Bessel_functionBessel function - Wikipedia

    3 days ago · Bessel functions, first defined by the mathematician Daniel Bernoulli and then generalized by Friedrich Bessel, are canonical solutions y(x) of Bessel's differential equation + + = for an arbitrary complex number, which represents the order of the Bessel function.