If 
is the angle between two vectors 
and 
, then 
only when
let θ is the angle between two vectors 
.
Then 
are non-zero vectors so that
are positive.
As we know 
For 
As 
are positive.
Hence, 
The correct answer is (B).
16
If is the angle between two vectors and , then only when
let θ is the angle between two vectors .
Then are non-zero vectors so that are positive.
As we know
For
As are positive.
Hence,
The correct answer is (B).