lilred5 lilred5

23-05-2016
Mathematics

contestada

What degree measure is equivalent to -4pie over 9

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apologiabiology apologiabiology

23-05-2016

anyway
2pi radians=360
so
-4pi/9radians=xdegrees

2pi/360=-4pi/9r/x
times both sides by 360x
2xpi=-1440pi/9
2xpi=-160pi
divide both sides by 2pi
x=-80
80 degres

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