If show that . Interpret the result geometrically.
If and then , where is a scalar.
If
We have, (i) (iii) is perpendicular to Again,
If and then
If are mutually perpendicular unit vectors and then
If is parallel to
If are three vectors such that show that the three vectors are orthogonal in pairs and .
Short Answer Type
Long Answer Type
are three vectors such that 
show that the three vectors 
are orthogonal in pairs and 
.
Is the converse true? 
show that 
. Interpret the result 
then prove that 
where m is a scalar.
and 
then 
, where 
is a scalar.
(iii) 
is perpendicular to 
Switch
and 
then 
are mutually perpendicular unit vectors and 
then 
is parallel to 
.
and give a geometrical interpretation of it.
