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OpenStudy (dtan5457):
Solve for when 0<=x<2pi 2cos(x/2)+1=0
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OpenStudy (dtan5457):
@dan815
OpenStudy (dtan5457):
@Nnesha
OpenStudy (dtan5457):
So far I'm getting just 240 degrees...what else..
OpenStudy (dtan5457):
oh, and 120, is that all?
OpenStudy (amistre64):
cos(x/2) = -1/2 x/2 = 180 +- 60 x = 360 +- 120
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OpenStudy (amistre64):
convert to radians tho
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