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(cot(x) + 2 cos(x)) / (csc(x) - sen(x))

( (cos(x)/sen(x)) + 2 cos(x)) / ( (1/sen(x)) - sen(x))

[(cos(x)) (1/sen(x)) + 2)] / [ (1 - sen^2(x))/sen(x) ]

[(cos(x)) (1/sen(x)) + 2)] / [ (cos^2(x))/sen(x) ]

[sen(x) / cos^2(x)] [(cos(x)) (1/sen(x)) + 2)]

[sen(x) / cos(x)] [ (1/sen(x)) + 2)]

(1/cos(x)) + (2 sen(x)/cos(x))

sec(x) + 2 tan(x)

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