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and 
if their lengths are 
, 
, and the angle between the vectors is 
.
and 
if their lengths are 
, 
, and the angle between the vectors is 
.
and 
if their lengths are 
, 
, and the angle between the vectors is 
.
and 
are given, for which 
, 
apply, and the angle between the vectors is equal to 
. Draw the vector 
and calculate its length .
and 
are given, for which 
, 
apply, and the angle between the vectors is equal to 
.
and 
are given. Express the vectors 
and 
with the given vectors 
and 
. Calculate the angle between the vectors 
and 
are given, for which 
, 
apply, and the angle between the vectors is equal to 
. Calculate the angle between the vectors 
.
and 
is given.
, 
, 
and 
with the given vectors.
collinear?
.
and 
.
, 
and 
.
, 
and 
.
the vectors 
, 
and 
.
and 
are orthogonal.
and the size of the angle 
between them. Round the size of the angle to two decimal places.
such that the vectors 
and 
are perpendicular:
in 
in 
and 
and 
and 
coplanar?
and 
are coplanar.
and 
are collinear.
and 
lie in the same plane?
and 
are given. Are the given vectors parallel?
