Geometrie-Trigonometrie-Rechtwinkliges Dreieck

• $sin \alpha = \frac{a}{c}$
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$a = sin \alpha \cdot c$
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$c = \frac{ a}{sin\alpha }$
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$cos \alpha = \frac{b}{c}$
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$b = cos \alpha \cdot c$
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$c = \frac{ b}{cos \alpha }$
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$tan \alpha = \frac{a}{b}$
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$a = tan \alpha \cdot b$
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$b = \frac{ a}{tan\alpha }$
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Beispiel Nr: 02
$\text{Gegeben:}\\\text{Winkel} \qquad \alpha \qquad [^{\circ}] \\ \text{Ankathete zu } \alpha \qquad b \qquad [m] \\ \\ \text{Gesucht:} \\\text{Hypotenuse} \qquad c \qquad [m] \\ \\ c = \frac{ b}{cos \alpha }\\ \textbf{Gegeben:} \\ \alpha=20^{\circ} \qquad b=8m \qquad \\ \\ \textbf{Rechnung:} \\ c = \frac{ b}{cos \alpha } \\ \alpha=20^{\circ}\\ b=8m\\ c = \frac{8m}{cos 20^{\circ} }\\\\c=8,51m \\\\\\ \small \begin{array}{|l|} \hline alpha=\\ \hline 20 ° \\ \hline 1,2\cdot 10^{3} \text{'} \\ \hline 7,2\cdot 10^{4} \text{''} \\ \hline 22\frac{2}{9} gon \\ \hline 0,349 rad \\ \hline \end{array} \small \begin{array}{|l|} \hline b=\\ \hline 8 m \\ \hline 80 dm \\ \hline 800 cm \\ \hline 8\cdot 10^{3} mm \\ \hline 8\cdot 10^{6} \mu m \\ \hline \end{array} \small \begin{array}{|l|} \hline c=\\ \hline 8,51 m \\ \hline 85,1 dm \\ \hline 851 cm \\ \hline 8,51\cdot 10^{3} mm \\ \hline 8,51\cdot 10^{6} \mu m \\ \hline \end{array}$