Respostas

2014-07-06T13:56:25-03:00
Π ---------- 180
3π/8 -----   x

x.π= 180.π.3/8
x = 540/8
x = 67,5 º

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π ---------- 180
π/16 -----   x

x.π = 180.π/16
x.π = 11,25.π
x = 11,25º