Variazione della funzione seno
\[\sin0=\sin 0^{\circ}=0\]
\[\sin\dfrac{\pi}{2}=\sin 90^{\circ}=1\]
\[\sin\pi=\sin 180^{\circ}=0\]
\[\sin\dfrac{3}{2}\pi=\sin 270^{\circ}=-1\]
\[\sin 2\pi=\sin 360^{\circ}=0\]
con \(-1\leq\sin\alpha\leq 1\).
\[\sin0=\sin 0^{\circ}=0\]
\[\sin\dfrac{\pi}{2}=\sin 90^{\circ}=1\]
\[\sin\pi=\sin 180^{\circ}=0\]
\[\sin\dfrac{3}{2}\pi=\sin 270^{\circ}=-1\]
\[\sin 2\pi=\sin 360^{\circ}=0\]
con \(-1\leq\sin\alpha\leq 1\).