Evaluate the following integrals:

∫ {1 + tan x tan (x + θ)} dx

tan(A - B) =


tan(x - (x + θ )) =


tan(θ) =


tan(θ)(1 + tanx.tan(x + θ )) = tan(x) - tan(x + θ)


(1 + tanx.tan(x + θ )) =






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