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Trigonometric Expression with Strange Angles

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September 7, 2024
trigonometry2024

Problem Statement

Compute 12sin⁡3π7+sin⁡2π7cos⁡3π7. \frac{1}{2}\sin\frac{3\pi}{7}+\sin\frac{2\pi}{7}\cos\frac{3\pi}{7}.
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