JEE Main & Advanced
Mathematics
Vector Algebra
Question Bank
Scaler or Dot product of two vectors and its application
question_answer
If the vectors \[a\,\mathbf{i}-2\mathbf{j}+3\mathbf{k}\] and \[3\mathbf{i}+6\mathbf{j}-5\mathbf{k}\] are perpendicular to each other, then a is given by [MP PET 1993]