Question

If vector ac is equal to vector b +vector c . Vector a is equal to vector b is equal to vector c . Find angle between a vector and b vector

Answer 1

Explanation:

Given : a + b = c and a+b=c

So, c 2 =( a + b ).( a + b )

Or (a+b) 2 =a 2 +b 2 +2 a . b

Or a 2 +b 2 +2ab=a 2 +b 2 +2abcosθ

So, cosθ=1

⟹ θ=0 o