Question

If vector a ×vector b=vector a. Vector b
Find angle between two vectors

Answer 1

Answer:

PHYSICS

If vector a+b=vector c and a+b=c what is the angle between A and B?

A .

90

B .

45

C .

0

D .

60

Given :    a+b=c   and    a+b=c

So,     c2=(a+b).(a+b)

Or     (a+b)2=a2+b2+2a.b

Or     a2+b2+2ab=a2+b2+2abcosθ

So,     cosθ=1

⟹ θ=0°

So option D is the right answer.