Two waves on one string are described by the wave functionsy$153\mathrm{.}0$ cos $(4\mathrm{.}0$x $21\mathrm{.}6$t$)$ y$254\mathrm{.}0$ sin $(5\mathrm{.}0$x $22\mathrm{.}0$t$)$ where x and y are in centimeters and t is in seconds. Find the values of y$11$ y$2$ at the points $($a$)$ x $51\mathrm{.}00,$ t $51\mathrm{.}00$; $($b$)$ x $51\mathrm{.}00,$ t $50\mathrm{.}500$; and $($c$)$ x $50\mathrm{.}500,$ t $50.$ Note: Remember that the arguments of the trigonometric functions are in radians.