Consider a sinusoidal electromagnetic wave with fields vec$(E)=E_{\text{m}\text{a}\text{x}}$hat$(j)sin(kx-t)$ and vec$(B)=B_{\text{m}\text{a}\text{x}}$hat$(k)sin(kx-t+),$ with $-*vec(E)$ and vec$(B)$ are to satisfy equations $\frac{E_y(x,t)}{x}=-\frac{B_z(x,t)}{t}$ and $-\frac{B_z(x,t)}{x}=lo{n}_0{}_0\frac{E_y(x,t)}{t}.$