Trigonometrie
From SkyWiki
(Difference between revisions)
(→halbe Winkel) |
(→Summen und Differenten) |
||
Line 73: | Line 73: | ||
|} | |} | ||
- | == Summen und | + | == Summen und Differenzen == |
+ | <math>\sin\alpha + \sin\beta = 2 \sin\frac{\alpha+\beta} 2 \cos\frac{\alpha-\beta} 2</math> | ||
+ | |||
+ | <math>\sin\alpha - \sin\beta = 2 \cos\frac{\alpha+\beta} 2 \sin\frac{\alpha-\beta} 2</math> | ||
+ | |||
+ | <math>\cos\alpha + \cos\beta = 2 \cos\frac{\alpha+\beta} 2 \cos\frac{\alpha-\beta} 2</math> | ||
+ | |||
+ | <math>\cos\alpha - \cos\beta = -2 \sin\frac{\alpha+\beta} 2 \sin\frac{\alpha-\beta} 2</math> | ||
- | |||
- | |||
- | |||
[[category:Mathematik]] | [[category:Mathematik]] |
Revision as of 21:43, 16 September 2008
Contents |
Definitionen
Symmetrieen
trigonometrische Äquivalenzen
Additionstheoreme
doppelte Winkel
halbe Winkel
Summen und Differenzen