Formule di duplicazione

Concept — Formule di duplicazione.

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Linked atoms

13 linked atoms.

29 Formule di addizione, duplicazione, bisezione

• 3
• Example: linearising sin⁴α
• Linearising sin²α cos²α
• Lowering the degree: linearisation formulae
• Proof of the bisection formulae
• The bisection formulae
• The duplication formulae
• Triple-angle formula for the cosine

30 Formule parametriche, prostaferesi, Werner

• The parametric formulae

31 Equazioni goniometriche

• Equations solvable by substitution

32 Disequazioni goniometriche

• Factorisation with the double-angle formula
• Inequality reducible to the cosine
• The sign-study method