 and
 and  are parallel vectors,
then [
 are parallel vectors,
then [  ,
,  ,
,  ] is equal to
 ] is equal to lies in the plane of
 lies in the plane of  and
 and  , then
 , then , then the value of [
, then the value of [ ] is
] is ,
,  ,
,  are three unit vectors such
that
 are three unit vectors such
that  is perpendicular to
 is perpendicular to  , and is parallel to
 , and is parallel to  then
 then  x (
 x ( x
 x  ) is equal to
 ) is equal to ,
, ,
,  ] = 1, then the value of
 ] = 1, then the value of  is
 is and
 and  are unit vectors such
that [
 are unit vectors such
that [ , b,
, b,  × b ] = π/4, then the angle between
 × b ] = π/4, then the angle between  and
 and  is
 is and
 and  ,
then the value of λ + μ is
,
then the value of λ + μ is ,
,  ,
,  are non-coplanar, non-zero vectors
such that [
 are non-coplanar, non-zero vectors
such that [ ,
,  ,
,  ] = 3, then
] = 3, then  is equal to
 is equal to ,
,  ,
,  are three non-coplanar vectors
such that
 are three non-coplanar vectors
such that  , then the angle between
, then the angle between  and
 and  is
 is