Forces X,Y and Z have magnitudes 10N, 5(...

Forces X,Y and Z have magnitudes `10N`, `5(sqrt(3)-1) N` and `5(sqrt(3)+1) N`, respectively. The forces Y and Z act in the same direction as shown in figure. The resultant of X and Y and the resultant of X and Z have the same magnitudes. Find `theta`, the angle between X and Y.

`150^(@)`

`135^(@)`

`120^(@)`

`105^(@)`

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