Answer
$$R=28.9 \mathrm{~N}
$$
Work Step by Step
$$
\begin{aligned}
& ↺+M_C=-5+R\left(2(0.15) / \tan 60^{\circ}\right)=0 \\
& R=28.9 \mathrm{~N}
\end{aligned}
$$
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.