For Rc$/$Rd I've tried $+/-5\mathrm{.}057$N and $8\mathrm{.}7991$N as answers and both were wrong, Where did I go wrong?

Required information

Channel $AB$ is fixed in space, and its centerline lies in the $xy$ plane. The plane containing edges $AC$ and $AD$ of the channel

is parallel to the $xz$ plane. The surfaces of the channel are frictionless and the sphere $E$ has $2$ kg mass.

NOTE: This is a multi$-$part question. Once an answer is submitted, you will be unable to return to this part.

Determine the force supported by cord $EF,$ and the reactions $R_C$ and $R_D$ between the sphere and sides $C$ and $D,$ respectively, of the

channel. $($Round the final answers to four decimal places.$)$

The force supported by cord $EF$ is

The reactions $R_C$ and $R_D$ between the sphere and sides $C$ and $D,$ respectively, of the channel are as follows:

$R_C=$

$R_D=$