Вычислите \(\large8\sin^2{\frac{15\pi}{16}}\cos^2{\frac{17\pi}{16}}-1\) . \(\large {-{\frac{\sqrt{2}}{2}}}\) \(\large {\frac{1}{\sqrt{2}}}\) \({0,5}\) \(-1\)

Задание

Вычислите \(\large8\sin^2{\frac{15\pi}{16}}\cos^2{\frac{17\pi}{16}}-1\) .