CUET Mathematics - Which of the following statements are true? (A) If r = xi + yj + zk, then x, y, z are called direction ratios of r. (B) For any two vectors a and b, a + b = b + a (C) a b if and only if a x b = 0 (D) Projection of b on a is a * b|a|^2 Choose the correct answer from the options given below: | PYQs + Solutions | AfterBoards