Bragg's law states that $n=2$dsin$,$ where $n$ is the order of diffraction, $$ is the wavelength of the radiation, and $d$ is the interplanar spacing. For a certain crystal, $x-$rays of wavelength $0\mathrm{.}1nm$ is used in a first order diffraction experiment. If the angle of diffraction is $90,$ determine the interplanar spacing in $nm.$ Just put in the answer in the box below. Do not put in the units.