Todas as dúvidas que tiver sobre Trigonometria (ângulos, senos, cosenos, tangentes, etc.), Geometria Plana, Geometria Espacial ou Geometria Analítica
09 jul 2016, 22:54
Calcule o valor de â na figura
10 jul 2016, 21:07
3a+30+a+30=180
4a=120
a=30
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