Trigonometrie


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 * [[image:thetopsinmath/val fct trig ung 30.jpg width="555" height="418" link="@http://matematicageogebra.eu.pn/vft30.html"]] ||  ||
 * [[image:Valfunctrigmul45.jpg width="550" height="401" link="@http://matematicageogebra.eu.pn/vft45.html"]] ||  ||