A wave is modeled with the function y $($x$,$ t$)=(0\mathrm{.}25$m $)$cos $((0\mathrm{.}301)2-(0\mathrm{.}90)$t$).$

Find the $($a$)$ amplitude, $($b$)$ wave number, $($c$)$ angular frequency, $($d$)$ wave speed, $($e$)$

wavelength, and $($f$)$ period of the wave.