Solve these problems and show every step taken

Find the unit vector that has the same direction as the vector v. 12) v=-31 - 4j A u= - in / m Bu=51 1+ C) u = - 5 D) u = -15i - 20j 13) v=-12i - 5j A) u= - 13. 13. Bu=- + 13 C u= -1561 - 65j 12 Du=- 13 Write the vector v in terms of i and j whose magnitude | v | and direction angle 0 are given. 14) | v| = 10, 0 = 120 A) v=-51 + 5~3j B) v = 51 - 5~3j C) v=-512i + 51/2j D) v=53i - 5j 15) |vll = 8, 0 = 30 A) v= 43i + 4j B) v= -43i + 4j C) v = 4 2i + 4\/2j D) v= 41 + 4\3j