here is my solution
for the equilibrium of the traffic light,
considering the equilibrium of the joining point of cables,
on Y direction,
you have three equations
I cannot find where you go a minus sign
1 ) A traffic light weighing 100 N hangs from a vertical cable to two other cables that are fastened to a support.
The upper cabels make angle of 37 and 53 with the horizontal . Find the tension in each of the three cables
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Here I now first must find x component and y component
How I find the
x component and y component in every Q I do mistake
and why you say -T cos 37 why ( -) here ??
plese Help me