Question:
Mark $(\sqrt{)}$ against the correct answer in each of the following:
$\int \frac{\mathrm{dx}}{(1-\cos x)}=?$
A. $\frac{1}{(x-\sin x)}+C$
B. $\log |x-\sin x|+C$
C. $\log \left|\tan \frac{x}{2}\right|+C$
D. $-\cot \frac{x}{2}+C$
Solution:
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