The resultant vector of two particular displacement vectors does not equal the sum of the magnitudes of the individual vectors.Decribe the directions of the two vectors
If the resultant magnitude of the sum of two vectors is not the sum of their individual magnitudes, then they are not both acting in the same direction.
That's all you really know about them. They can be in ANY two different directions; just not both in the same direction.
If they were both in the same direction, then the magnitude of their vector sum would be the sum of their magnitudes, and the direction of their vector sum would be the same direction as both of them.