Решите уравнение \(\frac{\cos{2x}\cos{8x}-\cos{10x}}{\cos{x}+1}=0.\) Выберете корни уравнения, принадлежащие отрезку \([0;\pi].\)

• \(0\)
• \(\frac{\pi}{8}\)
• \(\frac{\pi}{4}\)
• \(\frac{3\pi}{8}\)
• \(\frac{\pi}{2}\)
• \(\frac{5\pi}{8}\)
• \(\frac{3\pi}{4}\)
• \(\frac{7\pi}{8}\)
• \(\frac{9\pi}{8}\)
• \(\frac{5\pi}{4}\)
• \(\frac{11\pi}{8}\)
• \(\frac{3\pi}{2}\)
• \(\frac{13\pi}{8}\)
• \(\frac{7\pi}{4}\)
• \(\pi\)
• \(\frac{15\pi}{8}\)