A company hangs a sign for their business. The sign is held by two

A company hangs a sign for their business. The sign is
held by two support bars that make a 60 degree angle
with each other and the sign weighs 100 lbs. What are
the magnitudes of the forces exerted by the sign on
each support bar?
A flatscreen tv is supported equally on each side by
two cables suspended from the ceiling. The cables for
a 100 degree angle with each other. If the screen
weighs 800 pounds, what is the force exerted by each
of the cables on the screen?