Asked by Segun
Dtermine the value of a so that
u=2i+aj+k and 4i-2j-2k are perpendicular
Did you just start this topic?
This is a very easy question.
if two vectors are perpendicular, then their dot product must be zero
then (2,a,1).(4,-2,-2)=0
8-2a-2=0
a=3
u=2i+aj+k and 4i-2j-2k are perpendicular
Did you just start this topic?
This is a very easy question.
if two vectors are perpendicular, then their dot product must be zero
then (2,a,1).(4,-2,-2)=0
8-2a-2=0
a=3