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    Verifiying Trigonometric Identities

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    Verify the identity algebraically: 1+ cos 10y = 2 cos^2 5y

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    https://brainmass.com/math/trigonometry/verifiying-trigonometric-identities-102177

    Solution Summary

    A trigonometric identity is proven. The solution is detailed and well presented. The response received a rating of "5/5" from the student who originally posted the question.

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