sen4/3+sen22.sen/2.... Pergunta de ideia deAmandix

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sen4/3 $\pi$ +sen2 $\pi$
2.sen $\pi$ /2

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andresccp Π = 180 graus

4/3 π =180.4/3 =720/3 = 240
2π =180.2=360
π /2 = 180/2 = 90

$\frac{sen(240)+sen(360)}{2sen(90)} = \frac{sen(240)+0}{2.1}=\frac{sen(240)}{2}= sen(120)$

observando a tabela

sen 120 = cos 30 = (√3)/2

$\frac{ \sqrt{3} }{2}$

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