physics vector lab help??

Question

link for lab handout:

http://facstaff.gpc.edu/~jseymour/Physics%201111L-2211L/Lab_02_Force_Table_004.pdf

i need help with number 2 and 6:

2) If you have four pulleys (four forces acting on a particle), could all four pulleys be placed in the same quadrant or in two adjacent quadrant and still be in equilibrium? Explain.

6) The x and y component of a certain force are measured and found to be 68 (+/-3) N and 42 (+/-) N, respectively. Calculate the direction and magnitude of this force, expressing your results to the proper number of significant figures and showing the error in both magnitude and angle. Note that the error in the latter is obtained from the error in its tangent. Devise a procedure for doing this and show your work.