Fig. P$2\mathrm{.}75$ and P$2\mathrm{.}76$

$2\mathrm{.}76$ The angle between the guy wire $AC$ and the mast is $20.$ Knowing that the tension in $AC$ is $300$ N $,$ determine $($a$)$ the $x,y,$ and $z$ components of the force exerted on the boat at $C,(b)$ the angles ${}_x,{}_y,$ and ${}_z$ defining the direction of the force exerted at $C.$