(Solved):
3. (40pts) A force \( \vec{F}=150 \hat{x}-200 \hat{y}+1500 \hat{z} \) is exerted at point A. Find ...
3. (40pts) A force \( \vec{F}=150 \hat{x}-200 \hat{y}+1500 \hat{z} \) is exerted at point A. Find the unit vectors for cables \( A B, A C \), and \( A D \). Find the forces exerted on the cables \( A B, A C \), and \( A D \). Show all work and the matrix/equations used to solve it. You may state that you used your \( 3 \times 3 \) solver to get the final answers.