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Abstract

Using Euler’s theorem, geometric sums and Chebyshev polynomials, we prove trigonometric identities involving sums and multiplications of cosine.

Author Bio

Sarah Weller graduated from Colorado Mesa University in 2017 with a Bachelor of Science in mathematics. Her work was done as part of a capstone course as an undergraduate student under the guidance of Markus Reitenbach. She intends to attend graduate school in 2018 to pursue a PhD in mathematics.

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