Question:
Mark $(\sqrt{ })$ against the correct answer in each of the following:
$\int \operatorname{cosec} x(\operatorname{cosec} x+\cot x) d x=?$
A. $\cot x-\operatorname{cosec} x+C$
B. $-\cot x+\operatorname{cosec} x+C$
C. $\cot x+\operatorname{cosec} x+C$
D. $-\cot x-\operatorname{cosec} x+C$
Solution:
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