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  2. Mnemonics in trigonometry - Wikipedia

    en.wikipedia.org/wiki/Mnemonics_in_trigonometry

    Other mnemonics include: All S tations T o C entral [6] All S illy T om C ats [6] A dd S ugar T o C offee [6] All S cience T eachers (are) C razy [7] A S mart T rig C lass [8] All S chools T orture C hildren [5] A wful S tinky T rig C ourse [5] Other easy-to-remember mnemonics are the ACTS and CAST laws.

  3. Tangent half-angle substitution - Wikipedia

    en.wikipedia.org/wiki/Tangent_half-angle...

    t. e. In integral calculus, the tangent half-angle substitution is a change of variables used for evaluating integrals, which converts a rational function of trigonometric functions of into an ordinary rational function of by setting . This is the one-dimensional stereographic projection of the unit circle parametrized by angle measure onto the ...

  4. Law of cosines - Wikipedia

    en.wikipedia.org/wiki/Law_of_cosines

    Law of cosines. Fig. 1 – A triangle. The angles α (or A), β (or B), and γ (or C) are respectively opposite the sides a, b, and c. In trigonometry, the law of cosines (also known as the cosine formula or cosine rule) relates the lengths of the sides of a triangle to the cosine of one of its angles. For a triangle with sides and opposite ...

  5. Precalculus - Wikipedia

    en.wikipedia.org/wiki/Precalculus

    Calculus. In mathematics education, precalculus is a course, or a set of courses, that includes algebra and trigonometry at a level which is designed to prepare students for the study of calculus, thus the name precalculus. Schools often distinguish between algebra and trigonometry as two separate parts of the coursework. [1]

  6. 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.

  7. 9 Free, Easy-To-Use Budget Templates and Spreadsheets - AOL

    www.aol.com/finance/9-free-easy-budget-templates...

    Instead, here are nine completely free, simple-to-use budget templates and spreadsheets that are available to download right now. 1. Microsoft Excel Personal Monthly Budget Spreadsheet. Where to ...

  8. AP Precalculus - Wikipedia

    en.wikipedia.org/wiki/AP_Precalculus

    AP Precalculus. Advanced Placement (AP) Precalculus (also known as AP Precalc) is an Advanced Placement precalculus course and examination, offered by the College Board, in development since 2021 [1] and announced in May 2022. [2] The course debuted in the fall of 2023, with the first exam session taking place in May 2024.

  9. 6 Free Budget Templates for Excel, Google Sheets & Numbers - AOL

    www.aol.com/6-free-budget-templates-excel...

    6 Free Budget Template Spreadsheets. There are many fish in the sea, and we promise there’s a budget spreadsheet out there for you. Here are our picks based on budgeting personality types one ...

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