someone please help..been trying for a while?

Question

FInd the tension in all the strings.
I already know tension in C is 250 N
60 and 45 are the angles formed

http://tinypic.com/fullsize.php?pic=3463yx5&s=2

Answer 1

since the wire A is sloped upwards it can't provide any force upwards. there for the vertical component of B counters the vertical components of A and C
sin45 x B = C + cos60 x A

since C is vertical it cannot affect the horizontal of A or B, so
sin60 x A = cos45 x B

that's 2 equations with 2 unknowns. can you solve from there? hint, solve the second equation for A or B and plug into the first eq.