Question

1.A=i+j where i,j are unit vectors. What is the angle between the vector and x-axis.​

Answer 1

Answer:

answer is 45° degree

Explanation:

Angle between vectors A= i + j and B= i

is given by,

cos(θ) =A · B/ |A| × |B|

or, cos(θ) = 1 × 1 + 1 × 0 + 0/√2 ×1

               =1/√2

So,        θ = 45°