Question:
Mark $(\sqrt{ })$ against the correct answer in each of the following:
$\int \frac{\log \tan x}{\sin x \cos x} d x=?$
A. $\log \{\log (\tan x) \mid+C$
B. $\frac{1}{2}(\log \tan x)^{2}+C$
C. $\log (\sin x \cos x)+C$
D. none of these
Solution: