Find Determine the magnitude of the resultant force Determin

Find Determine the magnitude of the resultant force? Determine the coordinate directional angles?

the forces are:

F2= 1000cos40 k +1000 cos50i +1000(1-cos²40-cos²50)^0.5 j =642.78i+766.04k

F1= -20i +40j+80k

resultant force=622.78i+40j+846.04k

1) magnitude=1051.303N

2) directional angles:

cosx=622.78/1051.303

cosy=40/1051.303

cosz=846.04/1051.303