Trigonometrie

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(doppelte und halbe Winkel)
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== doppelte und halbe Winkel ==
== doppelte und halbe Winkel ==
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<math>\sin 2 \alpha = 2 \sin\alpha\, \cos\alpha</math>
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<math>\cos 2 \alpha = \cos^2\alpha 2 - \sin^2\alpha = 2 cos^2\alpha - 1 = 1 - 2 \sin^2\alpha</math>
[[category:Mathematik]]
[[category:Mathematik]]

Revision as of 21:26, 16 September 2008

trigonometrische Äquivalenzen

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Additionstheoreme

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doppelte und halbe Winkel

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