SOLUTION: Find all possible principal angles for cos0 = -1/2, where 0 (degrees) < 0 < 360 (degrees)

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Question 694903: Find all possible principal angles for cos0 = -1/2, where 0 (degrees) < 0 < 360 (degrees)
Answer by zoomkaboom4(62) About Me  (Show Source):
You can put this solution on YOUR website!
135 degrees and 225 degrees