SOLUTION: solve 3cos²x + 4cosx - 4 = 0 and write the general solution. Use your graphing calculator.

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Question 617513: solve 3cos²x + 4cosx - 4 = 0 and write the general solution. Use your graphing calculator.
Answer by lynnlo(4176) About Me  (Show Source):
You can put this solution on YOUR website!
x=0.8411+2#∩, 5.4421±2#∩