For a vector, R = O + P + Q, what is the magnitude and direction of R given O = (4.2 km, 30° North of west), P = (2.5 km, west), and Q = (3.0 km, 45° North of east).

• A. 18.8 km, 46° North of west
• B. 5.83 km, 13° North of East
• C. 9.7 km, North
• D. 5.83 km, 46° North of west

Answer: (D)