Find the angle between and when i. and ii. and

Question

Philoid · Accepted Answer

i)

We know that ,

⇒

⇒ cosθ = √3/2

⇒ θ = cos ^{- 1}(√3/2) = 30⁰ =

Ans: θ = cos ^{- 1}(√3/2) = 30⁰ =

ii)

We know that ,

⇒

⇒ cosθ = - 1/2

⇒ θ = cos ^{- 1}( - 1/2) = 120⁰ =

Ans: θ = cos ^{- 1}( - 1/2) = 120⁰ =