Math Chapter Wise Operations On Vectors English MCQ UP PCS (Pre) 2001 Q.If ˆ ˆ ˆ OA = i - j+ k and ˆ ˆ OB = j+ k then the area of the triangle OAB is: A6 B1 6 2 C1 3 2 D2 Show answer Correct answer: 1 6 2