Driehoek: Verskil tussen weergawes
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Lyn 39:
Die cosreël lui:
:<math>\cos a = \cos b \cos c + \sin
en
:<math> \cos \alpha = - \cos \beta \cos \gamma + \sin \beta \sin \gamma \cos a</math>
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Lyn 39:
Die cosreël lui:
:<math>\cos a = \cos b \cos c + \sin
en
:<math> \cos \alpha = - \cos \beta \cos \gamma + \sin \beta \sin \gamma \cos a</math>
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