SOLUTION: cosx=-1/2

Question 773704: cosx=-1/2
Found 2 solutions by Alan3354, Cromlix:
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
cosx=-1/2
--------
x = 120 degs
Answer by Cromlix(4381) (Show Source): You can put this solution on YOUR website!
cosx = -1/2
0<=x=<360
0<=x=<2Pi
x = 120 degrees, 240 degrees
x = 2Pi/3, 4Pi/3.
Hope this helps.
:-)
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