Physics question…..?

Hi, i need help solving this problem:
Three small children are pulling a rag doll in different directions, each trying to get the doll from the other two. the x-component of the force exerted by the first child is 5.0N, and the y-component is 3.0N. The second child’s force is -4.0 in the x-direction and 2.0N in y-direction. The x and y components of the third force are 1.0N and -8.0N. what are the components of the net force acting on the rag doll? What is the direction and magnitude of the net force?

This is how I would set up the equation.

1st child: X=5cos0 Y=3sin90
2nd child: X=-4cos180 Y=2sin90
3rd child: X=1cos0 Y=-8sin270

Fx= 5+4+1
Fx= 10

Fy=3+2+8
Fy= 13

Fnet = C(squared) = Fx(squared) + Fy(squared)
Fnet = C(sq’d) = 100 + 169
Fnet = C(sq’d) = 269
Fnet = Square root of 269
Fnet = 16.40N (rounded off to 2 decimal places)

Angle = Tan-1(Fy/Fx)
Angle = Tan-1(13/10)
Angle = 52 degrees (Rounded off)

Answer = 16.4N(East52*North) or 16.4(North48*East)

OR!!

Answer = 16.4N(X52*Y) or 16.4N(Y48*E)
Hopefully my calculations are correct.

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