Question

angle between vector (i+j) and (j+k)
​

Answer 1

Answer:

∅ = 60°

Explanation:

Let angle between ( i + j ) and ( j + k )

cos∅ = ( i + j ).( j + k )/|i + j| .| j + k |

|i + j | = √(1² + 1² ) = √2

|j + k | = √(1² + 1²) = √2

cos∅ = 1/√2.√2

= 1/2

cos∅ = cos60°

∅ = 60°

Answer 2

Answer:

theta is 60 degree.

I think so