Driehoeksmeting: Verskil tussen weergawes

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Lyn 40:
== Sinreël en Cosreël==
 
[[Lêer:Driehoek abc.jpg|right|400px500px]]
 
In driehoek ABC geld:
Lyn 46:
Sinreël: <math>\frac{a}{sin A}\ = \frac{b}{sin B}\ = \frac{c}{sin C}</math>
 
Cosreël: <math>\cos A = \frac{b^2 + c^2 - a^2}{2bc}</math>
Cosreël:
 
<math>\cos A = \frac{b^2 + c^2 - a^2}{2bc}</math>
 
{{saadjie}}