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int(cos x)/(sin^(2)x(sin x+cos x))dx is ...

` int(cos x)/(sin^(2)x(sin x+cos x))dx` is equal to
(A)` log|(1+tan x)/(tan x)|-cot x + C`
(B) `log|(tan x)/(1+tan x)|+tan x+C`
(C) `log|(tan x)/(1+tan x)|-tan x+C `
(D) `log|(tan x)/(1+tan x)|+cot x+C`

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