what is value of sin2npi
\(n=0\to\sin(2\cdot0\pi)=\sin0=0\\\ =1\to\sin(2\cdot1\pi)=\sin2\pi=0\\\ =2\to\sin(2\cdot2\pi)=\sin4\pi=0\\\vdots\\\sin2n\pi=0\ for\ n\in\mathbb{Z}\)
