1. The problem statement, all variables and given/known data got a vector F (105,300,140) magnitude: 347.3 it wants the angles, 3 of them with the axis x y z 2. Relevant equations all my calculations has lead to the wrong answer, but the correct answer is (180-myanswer) why is that? 3. The attempt at a solution using AB = |A||b| cos α formula so with an x-axis the coordinates are (1,0,0) FX/|F||X|=cos(x-axis angle) arcos(105/347.3) = x-axis angle getting the answer: 72.4degrees the "correct" answer is 107.6 meaning 180-72.4, why am i getting this 180degree descrepency?