What is 3 sin^2 x / sin x? thanks

$\frac{3 {\sin}^{2} x}{\sin} x = 3 \sin x$
In trigonometry, ${\sin}^{2} x = \sin x \times \sin x$
Hence $\frac{3 {\sin}^{2} x}{\sin} x = \frac{3 \sin x \times \sin x}{\sin} x = 3 \sin x$