Trigonometrie
From SkyWiki
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== halbe Winkel == | == halbe Winkel == | ||
| - | <math>\sin^2\frac\alpha 2 = </math> | + | <math>\sin^2\frac\alpha 2 = \frac 1 2 (1 - \cos\alpha)</math> |
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| + | <math>\cos^2\frac\alpha 2 = \frac 1 2 (1 + \cos\alpha)</math> | ||
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| + | <math>\tan^2\frac\alpha 2 = \frac {1 - \cos\alpha}{1 + \cos\alpha}</math> | ||
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[[category:Mathematik]] | [[category:Mathematik]] | ||
Revision as of 21:31, 16 September 2008
Contents |
trigonometrische Äquivalenzen
Additionstheoreme
doppelte Winkel
halbe Winkel
