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2. TI-84 Plus series - Wikipedia

   en.wikipedia.org/wiki/TI-84_Plus_series

   The TI-84 Plus C Silver Edition was released in 2013 as the first Z80-based Texas Instruments graphing calculator with a color screen.It had a 320×240-pixel full-color screen, a modified version of the TI-84 Plus's 2.55MP operating system, a removable 1200 mAh rechargeable lithium-ion battery, and keystroke compatibility with existing math and programming tools. [6]

3. Spherical trigonometry - Wikipedia

   en.wikipedia.org/wiki/Spherical_trigonometry

   The cotangent, or four-part, formulae relate two sides and two angles forming four consecutive parts around the triangle, for example (aCbA) or BaCb). In such a set there are inner and outer parts: for example in the set (BaCb) the inner angle is C, the inner side is a, the outer angle is B, the outer side is b.

4. Comparison of Texas Instruments graphing calculators

   en.wikipedia.org/wiki/Comparison_of_Texas...

   The following table compares general and technical information for a selection of common and uncommon Texas Instruments graphing calculators. Many of the calculators in this list have region-specific models that are not individually listed here, such as the TI-84 Plus CE-T, a TI-84 Plus CE designed for non-French European markets.

5. Save Almost $50 Right Now On The Best-Selling TI-84 Plus ...

   www.aol.com/save-almost-50-now-best-180800321.html

   The TI-84 Plus calculator is packed with features and ideal for students and business professionals. Save $43 on our favorite calculator at Walmart now.

6. Graphing calculator - Wikipedia

   en.wikipedia.org/wiki/Graphing_calculator

   This includes calculators such as the TI-89 series . Turkey – any type of calculator whatsoever is prohibited in all primary and high schools. [19] Singapore – graphing calculators are used in junior colleges; it is required in the Mathematics paper of the GCE 'A' Levels, and most schools use the TI-84 Plus or TI-84 Plus Silver Edition.

7. 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

8. Inverse hyperbolic functions - Wikipedia

   en.wikipedia.org/wiki/Inverse_hyperbolic_functions

   for the definition of the principal values of the inverse hyperbolic tangent and cotangent. In these formulas, the argument of the logarithm is real if and only if z is real. For artanh, this argument is in the real interval (−∞, 0], if z belongs either to (−∞, −1] or to [1, ∞).

9. Today's Wordle Hint, Answer for #1264 on Wednesday, December ...

   www.aol.com/todays-wordle-hint-answer-1264...

   If you’re stuck on today’s Wordle answer, we’re here to help—but beware of spoilers for Wordle 1264 ahead. Let's start with a few hints.