Вычислите \(\sin^2\frac{\pi}{4} * \sin \frac{2\pi}{3}* \tg^2 \frac{\pi}{3}\) .

• \(\frac{3\sqrt{3}}{4}\)
• \(-\frac{3\sqrt{3}}{4}\)
• \(\frac{3\sqrt{3}}{2}\)
• \(-\frac{3\sqrt{3}}{2}\)