Hi guys please help with Statics question! I know the answer but I can't get to it. :(

Question

anonymous · Answer

attachment

anonymous · Answer

I have   sum of Fx=0        so   0= WC cos30 - 1.375 sin theta
and      sum of Fy=0     so  0= WC sin 30 + 1.375 sin theta - 1.5   
and having trouble solving so please show me working.   
ANW= 40.9 deg   and 1.2 kN    thanks heaps

anonymous · Answer

sorry question 3-13

mrnood · Answer

|dw:1400085291499:dw|

Use the sine rule to solve the 3rd side and the angles.

Note = your answer requires the complementary angle at the top of my drawing