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