Mathematics, 18.03.2021 02:00, Salamonti

prove that cos 2 theta - cos 3 theta + cos 8 theta / sin 2 theta + sin 3 theta + sin 8 theta = tan theta

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prove that cos 2 theta - cos 3 theta + cos 8 theta / sin 2 theta + sin 3 theta + sin 8 theta = tan t...