22(ii)) Fig 10 22 (i), (ii)
Definition 3 The vector product of two nonzero vectors 
aand
rb
r
, is denoted by a
 b
r
r
and defined as
a
b
×
r
r
 =
ˆ
|
||
a b|sin
n
θ
r
r
,
where, θ is the angle between  
aand
rb
r
, 0 ≤ θ ≤ π  and ˆn  is
a unit vector perpendicular to both 
a and  
rb
r
, such that
ˆ
,
a b and  
n
rr
 form a right handed system (Fig 10 23)