Problem $4$: Given the vector $x=\left[\begin{array}{cccccc}1& 8& 3& 9& 0& 1\end{array}\right],$ create a short program that will

a$)$ Add up the values of the elements in $x$ using a for$-$loop

b$)$ Compute the sine of the sum of the $x-$values $(x$ has units of degrees and $$ is np$.$pi$)$