hello i need help with the following problem. please and thank you.

Work must be hand-written.

7.) A sign is hung from a ceiling by two cables as shown in the figure below. Attaching the cables at an angle - above the horizontal creates horizontal stability. In other words, the sign will not sway side-to-side (left-to-right). The smaller & is, the more horizontally stable the sign is. However, each cable can only support a tension up to 65% of the sign's weight. What is the smallest angle # that can be used to hang the sign without the cables breaking? A A Physics is Fun