Question

if a=2i + j and b=λ j -3k . find λ if a is perpendicular to b​

Answer 1

Step-by-step explanation:

If a and b are perpendicular then their dot product must be equal to 0 i.e

A. B = 0

(2i + j) . ( lamda j - is 3k) = 0

1 Lamda = 0

So

Lamda = 0