Level:
Project ID:
2010016807
Source Problem:
Accepted:
0
Clonable:
1
Easy:
1
The expression \( \frac{\sin x-\sin^3 x}{\cos x-\cos^3 x } \) for $x\in\left(0;\frac{\pi}{2}\right)$ is equal to:
\( \mathrm{cotg}\,x \)
\( \mathrm{tg}\,x \)
\( \sin x \cdot \cos x \)
\( 2\,\mathrm{tg}\,x \)