Упростите выражение: \(\large\frac{tg(x+\frac{9\pi}{2})cos(x-\frac{3\pi}{2})+sin^3(x+\frac{\pi}{2})}{cos(x+\frac{\pi}{2})tg(x-\frac{11\pi}{2})}.\) \(1+2cos^2x\) \(1+cos^2x\) \(1+sin^2x\) \(3+cos^2x\) \(cos^2x\)

Задание

Упростите выражение: \(\large\frac{tg(x+\frac{9\pi}{2})cos(x-\frac{3\pi}{2})+sin^3(x+\frac{\pi}{2})}{cos(x+\frac{\pi}{2})tg(x-\frac{11\pi}{2})}.\)

\(1+2cos^2x\)
\(1+cos^2x\)
\(1+sin^2x\)
\(3+cos^2x\)
\(cos^2x\)