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Mathematics, 24.09.2019 02:30 Demondevilg

Prove that the left side equals the right side:
(sin x)(tan x cos x - cot x cos x) = 1 - 2 cos2x

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Prove that the left side equals the right side:
(sin x)(tan x cos x - cot x cos x) = 1 - 2 co...
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