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