Вычислите: \(\sin{\frac{2\pi}{5}}\cdot\cos{\frac{\pi}{15}}-\cos{\frac{2\pi}{5}}\cdot\sin{\frac{\pi}{15}}\)
\(\frac{\sqrt3}{2}\)
\(\frac{\sqrt2}{2}\)
\(\frac{1}{2}\)
1
0