Question

vec a=hat i+hat j what is the angle between the vector and x - axis​

Answer 1

Answer:

Given A=i^+j^  ⇒∣A∣=2,

Let angle is θ

⇒A.i^=∣A∣cosθ

⇒(i^+j^).i^=2cosθ   ⇒cosθ=21   ⇒θ=45o