Question

which of the following vector is perpendicular to the vector A=2i+3j+4k a.i+j+k. b. 4i+3j-2k. c.i-3j+k. d.i+2j-2k​

Answer 1

Answer:

d) i+2j-2k is the correct answer.

Explanation:

the reason for this is that when you need to know which vector is perpendicular to a particular vector... you take its dot product. And if the dot product equals 0.. then the vectors are perpendicular.