The attached question(question 1) is in finnish, but you'll understand it no problem!;) The answers are given at the end of the text part of the question.
The Attempt at a Solution
Firstly, I'm wondering how can Ay be bigger than Ax even though the X side of the little triangle at the left end of the boom is 4 and Y is 3?
Secondly, why can't I write the equation for the x dimension as follows: [tex]\sum[/tex]F= -400sin15+0,8A=0