Vector u has a magnitude of 4 and a direction angle of 30 degrees. write the component form of this vector

For this case we have that the components of the vector u are given by:
 u = 4 * (cos (30) i + sin (30) j)
 Rewriting we have:
 u = 4 * ((root (3) / 2) i + (1/2) j)
 u = 2 root (3) i + 2j
 
 The component form of this vector is:
 u = 2 root (3) i + 2j

The correct answer will be d. -4