Respostas

2014-07-27T14:39:01-03:00
2014-07-27T14:40:59-03:00
Grava usando regra de 3 simples.

1 pi radiano equivale a 180°

π------------------180
x-------------------210

210π=180x
x=210π/180 agora simplifica
x=7π/6

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