This work presents a new approach to cosine formulas, indicating broader applications in mathematics.
This work presents a newly discovered approach to the cos(α+β) formula, offering a generalized perspective on trigonometric expansions. The method is rigorously derived and can be applied in analytical and algebraic contexts. This contribution is intended as a mathematical development for the community, with proper acknowledgment of prior classical results.
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Abdullah Baran (2026) studied this question.
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