Solve this following
Question:

Evaluate:

$\int\left(\frac{\cot x}{\sin x}-\tan ^{2} x-\frac{\tan x}{\cos x}+\frac{2}{\cos ^{2} x}\right) d x$

Ans. $-\operatorname{cosec} x+\tan x+x-\sec x+C$

Solution:

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