If a vector 
is perpendicular to two non-collinear vectors 
and 
then 
is perpendicular to every vector in the plane of 
and 
.
Given 
is perpendicular to 
and 
,so 
and 
Let a random vector 
in the plane of 
where p and k are some arbitrary constant
Taking dot product of 
Using 
and 
Hence, proved………
AI is thinking…
Couldn't generate an explanation.
Generated by AI. May contain inaccuracies — always verify with your textbook.
