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  2. Hyperbolic functions - Wikipedia

    en.wikipedia.org/wiki/Hyperbolic_functions

    sinh x is half the difference of e x and e −x cosh x is the average of e x and e −x. In terms of the exponential function: [1] [4] Hyperbolic sine: the odd part of the exponential function, that is, ⁡ = = =.

  3. Inverse hyperbolic functions - Wikipedia

    en.wikipedia.org/wiki/Inverse_hyperbolic_functions

    The standard convention is that ⁡ or ⁡ means the inverse function while (⁡) or ⁡ means the reciprocal / ⁡. Especially inconsistent is the conventional use of positive integer superscripts to indicate an exponent rather than function composition, e.g. sinh 2 ⁡ x {\displaystyle \sinh ^{2}x} conventionally means ( sinhx ) 2 ...

  4. List of trigonometric identities - Wikipedia

    en.wikipedia.org/wiki/List_of_trigonometric...

    A formula for computing the trigonometric identities for the one-third angle exists, but it requires finding the zeroes of the cubic equation 4x 3 − 3x + d = 0, where is the value of the cosine function at the one-third angle and d is the known value of the cosine function at the full angle.

  5. Trigonometric functions - Wikipedia

    en.wikipedia.org/wiki/Trigonometric_functions

    Sin(θ), Tan(θ), and 1 are the heights to the line starting from the x-axis, while Cos(θ), 1, and Cot(θ) are lengths along the x-axis starting from the origin. If the acute angle θ is given, then any right triangles that have an angle of θ are similar to each other. This means that the ratio of any two side lengths depends only on θ.

  6. Transcendental function - Wikipedia

    en.wikipedia.org/wiki/Transcendental_function

    The even and odd terms of this series provide sums denoting cosh(x) and sinh(x), so that = ⁡ + ⁡. These transcendental hyperbolic functions can be converted into circular functions sine and cosine by introducing (−1) k into the series, resulting in alternating series.

  7. Sine and cosine - Wikipedia

    en.wikipedia.org/wiki/Sine_and_cosine

    In mathematics, sine and cosine are trigonometric functions of an angle.The sine and cosine of an acute angle are defined in the context of a right triangle: for the specified angle, its sine is the ratio of the length of the side that is opposite that angle to the length of the longest side of the triangle (the hypotenuse), and the cosine is the ratio of the length of the adjacent leg to that ...

  8. What is ‘Disease X’ and why are experts worried? - AOL

    www.aol.com/disease-x-why-experts-worried...

    Health authorities around the world are still grappling with lessons learned at the start of the Covid-19 pandemic and trying to determine the best way to prevent a new one.. Many researchers have ...

  9. Sinh - Wikipedia

    en.wikipedia.org/wiki/Sinh

    Sinh may refer to: Hyperbolic sine, abbreviated as sinh, a mathematical function; Sinh (clothing), a traditional women's garment from Southeast Asia;