The angle refers to that between the z and x axis. The hypotenuse of the triangle made between these two is 4580. You then have the means of calculating the x and z displacements. Sin(32.4) X 4580 is the x displacement. Cos(32.4) X 4580 is the z displacement. Don't forget to make the x vector...
C and D are asking for the resultant magnitude of the vectors, so that means that you take those x and y components, and then calculate the hypotenuse of the triangle that they form. Pythagorean theorem, just do this ((I + I)^2 + (J + J)^2)^(1/2) that that is the answer to C. Magnitude is a...