Short Answer Type
Long Answer TypeIf 
makes equal angles with 
and has magnitude 3, then prove that the angle between 
and each of 
is 
Short Answer TypeLong Answer Type
as the sum of a vector parallel, and a vector parallel, and a vector perpendicular to 
Short Answer Type
and 
and 
. Also find the projection of 
and other is perpendicular to 
is perpendicular to 
Switch
into vectors which are parallel and perpendicular to the vector 
form a right angled triangle. 
