Question:
Mark $(\sqrt{)}$ against the correct answer in the following:
$\int_{0}^{\pi / 4} \tan ^{2} x d x=?$
A. $\left(1-\frac{\pi}{4}\right)$
B. $\left(1+\frac{\pi}{4}\right)$
C. $\left(1-\frac{\pi}{2}\right)$
D. $\left(1+\frac{\pi}{2}\right)$
Solution:
