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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 March 4, 2021, 5:52 pm ad1c9bdddf

    Solution Summary

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