Trigonometrie
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(→Summen und Differenzen) |
Current revision (21:47, 16 September 2008) (view source) (→Produkt -> Summen oder Differenz) |
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== Produkt -> Summen oder Differenz == | == Produkt -> Summen oder Differenz == | ||
| - | <math>2 \sin\alpha \sin\beta = \cos(\alpha-\beta} - \cos(\alpha+\beta)</math> | + | <math>2\,\sin\alpha \sin\beta = \cos(\alpha-\beta} - \cos(\alpha+\beta)</math> |
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| + | <math>2\,\cos\alpha \cos\beta = \cos(\alpha-\beta} + \cos(\alpha+\beta)</math> | ||
| + | |||
| + | <math>2\,\sin\alpha \cos\beta = \sin(\alpha-\beta} + \sin(\alpha+\beta)</math> | ||
[[category:Mathematik]] | [[category:Mathematik]] | ||
Current revision
Contents |
Definitionen
Symmetrieen
trigonometrische Äquivalenzen
Additionstheoreme
doppelte Winkel
halbe Winkel
Summen und Differenzen -> Produkt
Produkt -> Summen oder Differenz
