Question:
Mark $(\sqrt{)}$ against the correct answer in the following:
$f(x)=\frac{x}{\sin x}$ is
A. increasing in $(0,1)$
B. decreasing in $(0,1)$
C. increasing in $\left(0, \frac{1}{2}\right)$ and decreasing in $\left(\frac{1}{2}, 1\right)$
D. none of these
Solution:
$\therefore f(x)$ is increasing in $(0,1)$