SOLUTION: cos4x=(-sqrt3)/2

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Question 1029962: cos4x=(-sqrt3)/2
Answer by ikleyn(52914) (Show Source):
You can put this solution on YOUR website!
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cos4x=(-sqrt3)/2
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cos(4x) = ---> 4x = , k = 0, +/-1, +/-2 . . . (1) or 4x = , k = 0, +/-1, +/-2 . . . (2) From (1): x = , k = 0, +/-1, +/-2 . . . From (2): x = , k = 0, +/-1, +/-2 . . .