Question

A vector and b vector are perpendicular if a=3i+2j_6k,

Answer 1

Then the dot product of a and b will be zero.

Assume vector b = xi+yj+zk

then (a).(b)=0

(3i+2j-6k).(xi+yj+zk)=0

3x+2y-6z=0

on providing more information you can get the value of x, y and z

Answer 2

above is the correct answer