If 
and 
are unit vectors inclined at an angle 
then prove that
Given Data: Two unit vectors inclined at an angle θ
Proof:
Since vectors are unit vectors
Now,
= 1+1+2×1×1×cosθ
= 2 + 2cosθ
= 2(1 + cosθ)
8
If and are unit vectors inclined at an angle then prove that
Given Data: Two unit vectors inclined at an angle θ
Proof:
Since vectors are unit vectors
Now,
= 1+1+2×1×1×cosθ
= 2 + 2cosθ
= 2(1 + cosθ)