Question

If a vector 2i 3j 8k is perpendicular to the vector 2j 4i ak , then the value of a is :

Answer 1

Explanation:

since it is perpendicular their product will be zero

therefore (2x2)i+(3x4)j+(8xa) k=0

4+12+8a= 0

8a=-16

a=-2

hope you have understood

then please make it as brainlist