based on vectors

Dear Student,

 

The magnitude of the difference of two vectors a and b can be calculated as

 

Similarly for magnitude of the sum of a and b

 

Now for two unit vectors a and b,

magnitude of a = 1 and magntude of b = 1

 

=> magnitude of (a+b) =

 

Therefore the correct answer is (b).

 

Regards Topperlearning.