I'm suppose to find the ordered pair (x,z) for components of the vector R(AB), which I am suppose to be able to find by R(AB) = R(B) - R(A). http://server6.theimagehosting.com/image.php?img=phytest.jpg So far, I solved for the components of the vector of B, and the vector of A. Vector A: cos 40 = x/360; x = 276 sin 40 degrees = y/360; y = 231 = (276, 231) Vector B: I guess to use sin, cos, tan I need a right angle. So I do the bottom of B to do it. (123+40=163; 180-163=17 degrees) cos 17 = x/880; x = 842 sin 17 = y/880; y = 257 = (842, 257) Vector B - Vector A = (842, 257) - (276, 231) = (566, 26) Which is wrong. What am I doing wrong? Should I be doing Vector B a different way? Or did I do the entire thing wrong?