Topic — Formule goniometriche.
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29
Linked atoms
15 linked atoms.
29 Formule di addizione, duplicazione, bisezione
- 3
- Example: cosine of 15°
- Example: cosine of 75°
- Example: linearising sin⁴α
- How the other formulae are derived
- Linearising sin²α cos²α
- Lowering the degree: linearisation formulae
- Proof of the bisection formulae
- Proof of the cosine subtraction formula
- Sine of 105° and cosine of 165°
- Tangent of 22.5°
- The addition and subtraction formulae
- The bisection formulae
- The duplication formulae
- Triple-angle formula for the cosine