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• 17:39, 27 December 2024 Admin talk contribs created page Mathe (Created page with "{{:Beweisarchiv: Geometrie: TOPNAV}} ==Additionstheoreme (Sinus)== 400px|right '''Beweis für:''' <math>\sin (\alpha \pm \beta ) = \sin \alpha \cdot \cos \beta \pm \sin \beta \cdot \cos \alpha</math> Im rechtwinkligen Dreieck <math> \triangle {AOB} </math> ist '''<big>(1)</big>'''  <math>\sin (\alpha + \beta ) = \frac{{\overline {AB} }}{1} = \overline {AB}</math> Im rechtwinkligen Dreieck <math> \triangle {BOD} </math>...")