Question:
Mark $(\sqrt{)}$ against the correct answer in each of the following:
$\int \operatorname{cosec} x d x=?$
A. $\log |\operatorname{cosec} x-\cot x|+C$
B. $-\log |\operatorname{cosec} x-\cot x|+C$
C. $\log |\operatorname{cosec} x+\cot x|+C$
D. none of these
Solution:
