matematika
tolong jawab please pakai caranya
tolong jawab please pakai caranya
Jawab:
c. 100°
Penjelcasan dengan langkah-langkah:
Jumlah sudut dalam segitiga = 180°
[tex]m\angle A=\frac{3}{3+2+4}\times 180\textdegree=\frac{3}{9} \times 180\textdegree=60\textdegree\\m\angle B=\frac{2}{3+2+4}\times 180\textdegree=\frac{2}{9} \times 180\textdegree=40\textdegree\\m\angle C=\frac{4}{3+2+4}\times 180\textdegree=\frac{4}{9} \times 180\textdegree=80\textdegree[/tex]
Maka,
[tex]\angle AED=\angle C =80\textdegree[/tex]
Sudut AED dan sudut CED membentuk sudut pelurus, sehingga
[tex]\angle AED + \angle CED=180\textdegree\\80\textdegree+\angle CED=180\textdegree\\\angle CED=180\textdegree-80\textdegree\\\angle CED=100\textdegree[/tex](c)
[answer.2.content]
