Question

(c) Show that the vectors Ā=i+j+3k and 8 = 31 – 31 + 2are
perpendicular.​

Answer 1

Explanation:

if two vectors are perpendicular then their dot prod must be zero

thererefore, a.b=a.b costheta

=(I+j+3k)(6)(90)

=0

since a.b is 0

therefore the two vectors are perpendicular...