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    Trigonometric function

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    Find all the solutions to 5(cos x)^2 - 4cosx-1=0

    © BrainMass Inc. brainmass.com May 24, 2023, 1:16 pm ad1c9bdddf
    https://brainmass.com/math/trigonometry/trigonometric-function-solution-calculus-15034

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    The expert finds all the solutions to 5(cos x)^2 - 4cosx-1=0.

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