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Find all solutions to the equation. cos^2x + 2 cos x + 1 = 0
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Find all solutions to the equation.

cos^2x + 2 cos x + 1 = 0

User Alex Calugarescu
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Hope this helps you.
Find all solutions to the equation. cos^2x + 2 cos x + 1 = 0-example-1
User Priyank Shah
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User Limlim
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