Find the tension in each cable necessary to keep the block from moving (either sideways or downward)
A 900-lb block is being suspended and held stationary by two steel cables as shown. The first cable (to the left of the block) makes a 70 degree angle with the horizontal, while the second cable (to the right of the block) makes a 65 degree angle with the horizontal. At point B (where the weight is being held), there are three forces acting: R, S, and W. Find the tension in each cable necessary to keep the block from moving (either sideways or downward).
So, so far I have this - this is how my professor says it "should be done". I also do have a program on my calculator called, "System of Equations" that I can plug in 2 variables and have it solve it for me.
W (weight) = -900j 70 degree angle\ /65 degree angle
- W = 900j \ _____ /
L = |L| (cos theta i + sin theta j)
R = |R| (cos theta i + sin theta j)
l + r + w = 0 or l + r = -w
If you could, please help me solve this - showing me step by step would be most beneficial into helping me understand this for my final! :) Thank you!