Q.If the vectors ˆ ˆ ˆ 2i j k + + + + and ˆ ˆ ˆ i 4j k − + λ − + λ − + λ − + λ are perpendicular to each other, then what will be the value of --?
Correct answer: 2
Read, practise, and share this question using its permanent link.