![algebra precalculus - How $n\pi +(-1)^n \pi/6 = n\pi + \pi/6$ and $n\pi - (-1)^n \pi/6 = n\pi - \pi/6$? - Mathematics Stack Exchange algebra precalculus - How $n\pi +(-1)^n \pi/6 = n\pi + \pi/6$ and $n\pi - (-1)^n \pi/6 = n\pi - \pi/6$? - Mathematics Stack Exchange](https://i.stack.imgur.com/tlVLF.jpg)
algebra precalculus - How $n\pi +(-1)^n \pi/6 = n\pi + \pi/6$ and $n\pi - (-1)^n \pi/6 = n\pi - \pi/6$? - Mathematics Stack Exchange
![Statement-1: sin`(pi+theta)=-sin theta` Statement-2: `sin(npi+theta)=(-1)^(n) sin theta`, `n in N`. - YouTube Statement-1: sin`(pi+theta)=-sin theta` Statement-2: `sin(npi+theta)=(-1)^(n) sin theta`, `n in N`. - YouTube](https://i.ytimg.com/vi/-I9CGkRl5kk/maxresdefault.jpg)
Statement-1: sin`(pi+theta)=-sin theta` Statement-2: `sin(npi+theta)=(-1)^(n) sin theta`, `n in N`. - YouTube
![algebra precalculus - How $n\pi +(-1)^n \pi/6 = n\pi + \pi/6$ and $n\pi - (-1)^n \pi/6 = n\pi - \pi/6$? - Mathematics Stack Exchange algebra precalculus - How $n\pi +(-1)^n \pi/6 = n\pi + \pi/6$ and $n\pi - (-1)^n \pi/6 = n\pi - \pi/6$? - Mathematics Stack Exchange](https://i.stack.imgur.com/HA5gG.jpg)
algebra precalculus - How $n\pi +(-1)^n \pi/6 = n\pi + \pi/6$ and $n\pi - (-1)^n \pi/6 = n\pi - \pi/6$? - Mathematics Stack Exchange
![Range of function $ \frac{1}{n\pi}(1-\cos(n\pi))\sin(\frac{n\pi}{2})$ and determination of Fourier coefficients - Signal Processing Stack Exchange Range of function $ \frac{1}{n\pi}(1-\cos(n\pi))\sin(\frac{n\pi}{2})$ and determination of Fourier coefficients - Signal Processing Stack Exchange](https://i.stack.imgur.com/zCB3W.png)