Mathematics, 29.08.2019 11:00 lilGi0

1. cot x sec4x = cot x + 2 tan x + tan3x
2. (sin x)(tan x cos x - cot x cos x) = 1 - 2 cos2x
3. 1 + sec2x sin2x = sec2x
4. - tan2x + sec2x = 1

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1. cot x sec4x = cot x + 2 tan x + tan3x
2. (sin x)(tan x cos x - cot x cos x) = 1 - 2 cos2x

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