Let 
and 
Find a vector 
which is perpendicular to both 
and 
and is such that 
Let 
the vector
which is perpendicular to both 
and 
⇒ 
⇒ 
Solving equations 1,2,3 simultaneously we get
p = 7,q = - 7,r = - 7
∴ 
Ans: 
1
Let and
Find a vector which is perpendicular to both and and is such that
Let
the vector which is perpendicular to both and
⇒
⇒
Solving equations 1,2,3 simultaneously we get
p = 7,q = - 7,r = - 7
∴
Ans: