Mathematics, 24.09.2021 08:30 kaitlynbrace9742

Prove that : cos 3π/13 * cos 5π/13 - cos 8π/13 * cos 10π/13 = 0

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Prove that : cos 3π/13 * cos 5π/13 - cos 8π/13 * cos 10π/13 = 0...

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Reason Given Statement 7 + x = 12 x + 7 = 12 (x + 7) - 7 (12) - 7 (x + 7) + - 7 = 12 +-7 x + 7 +-7) = 12 +-7

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