Dokáž, že platí \( \large\sin x=\cos\left(x-\frac{\pi}{2}\right) \).
\( \large\cos\left(x+\frac{\pi}{2}\right)=\sin x \)
\( \large\cos\left(x-\frac{\pi}{4}\right)=\sin x \)
\( \large\cos\left(x-\frac{\pi}{2}\right)=\sin x \)
\( \large\cos\left(x-\frac{\pi}{3}\right)=\sin x \)
HINT WAS NOT GIVEN