please help! I would truly appreciate it$.$

Problem $4$:

A block of mass $10$ kg is hanging within a room via $3$ cables, and is at static equilibrium. The

room has the following dimension as shown. The block is located such that tension towards

point $C$ is purely to the right horizontal, parallel to the $8$ meter edge. Gravity's direction is

downward vertical, parallel to the height $(10$ meter edge$).$

Define appropriate reference frame and find the following:

$($a$)$ Position vector from the block to point $A,B,$ and $C$ respectively.

$($b$)$ Magnitude of tension in each cable.