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Evaluate: ∫ (tan x + cot x)^2 dx, x ∈[ π/3, π/4]

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Evaluate:  

\(\int\limits_{\pi/3}^{\pi/4}(tan\,x+cot\,x)^2dx\)

∫ (tan x + cot x)2 dx, x ∈[ π/3, π/4]

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1 Answer

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Substitute: 

tan(x)=u

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