Question

Let \(\overrightarrow a\) and \(\overrightarrow b\) be two unit vectors and θ is the angle between them. Then \(\overrightarrow a +\overrightarrow  b\) is a unit vector if

• A. \(θ=\frac{π}{4}\)
• B. \(θ=\frac{π}{3}\)
• C. \(θ=\frac{2π}{3}\)
• D. \(θ=\frac{π}{2}\)

Answer 1

The Correct Option is C

The correct answer is Option (C) : \(θ=\frac{2π}{3}\)