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  2. Law of cotangents - Wikipedia

    en.wikipedia.org/wiki/Law_of_cotangents

    Using the usual notations for a triangle (see the figure at the upper right), where a, b, c are the lengths of the three sides, A, B, C are the vertices opposite those three respective sides, α, β, γ are the corresponding angles at those vertices, s is the semiperimeter, that is, s = ⁠ a + b + c / 2 ⁠, and r is the radius of the inscribed circle, the law of cotangents states that

  3. List of formulae involving π - Wikipedia

    en.wikipedia.org/wiki/List_of_formulae_involving_π

    More formulas of this nature can be given, as explained by Ramanujan's theory of elliptic functions to alternative bases. Perhaps the most notable hypergeometric inversions are the following two examples, involving the Ramanujan tau function τ {\displaystyle \tau } and the Fourier coefficients j {\displaystyle \mathrm {j} } of the J-invariant ...

  4. Conway triangle notation - Wikipedia

    en.wikipedia.org/wiki/Conway_triangle_notation

    In geometry, the Conway triangle notation, named after John Horton Conway, allows trigonometric functions of a triangle to be managed algebraically. Given a reference triangle whose sides are a, b and c and whose corresponding internal angles are A, B, and C then the Conway triangle notation is simply represented as follows:

  5. Residue theorem - Wikipedia

    en.wikipedia.org/wiki/Residue_theorem

    The fact that π cot(πz) has simple poles with residue 1 at each integer can be used to compute the sum = (). Consider, for example, f(z) = z −2. Let Γ N be the rectangle that is the boundary of [−N − ⁠ 1 / 2 ⁠, N + ⁠ 1 / 2 ⁠] 2 with positive orientation, with an integer N. By the residue formula,

  6. Johnson tells Republicans Trump wants one big policy bill as ...

    www.aol.com/johnson-tells-republicans-trump...

    House Speaker Mike Johnson informed Republicans at a closed-door meeting Saturday that Donald Trump favored moving his agenda as one sweeping package, according to sources in attendance — a key ...

  7. Area of a triangle - Wikipedia

    en.wikipedia.org/wiki/Area_of_a_triangle

    Euclid proved that the area of a triangle is half that of a parallelogram with the same base and height in his book Elements in 300 BCE. [1] In 499 CE Aryabhata, used this illustrated method in the Aryabhatiya (section 2.6). [2] Although simple, this formula is only useful if the height can be readily found, which is not always the case.

  8. No. 19 Gonzaga on high alert facing Loyola Marymount

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    Dec 18, 2024; Spokane, Washington, USA; Gonzaga Bulldogs guard Nolan Hickman (11) controls the ball against the Nicholls State Colonels in the first half at McCarthey Athletic Center.

  9. Lisa Kudrow Reveals She Recently Found a Note from ... - AOL

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    In a 2021 interview, the cast told PEOPLE what they'd each taken from the set as a memento, and Perry echoed the story Kudrow told Kimmel about why he gave her the cookie jar: "Because she at one ...