Question
Let 
be two unit vectors. If the vectors 
and 
are perpendicular to each other, then the angle between 
is
-
π/6
-
π/2
-
π/3
-
π/4
Solution
C.
π/3
(iii) c and d are perpendicular to each other, i.e., c.d =0
To find Angle between a and b
Now, c.d = 0
⇒
Now, c.d = 0
⇒
