If a→ and b→ are unit vectors, then what is the angle between a→ – InterviewSolution

1.	If a→ and b→ are unit vectors, then what is the angle between a→ and b→ for 3a→-b→ to be a unit vector?(a) π6 (b) π4 (c) π3 (d) π2
Answer» If $\vec{a} and \vec{b}$ are unit vectors, then what is the angle between $\vec{a} and \vec{b} for \sqrt{3} \vec{a} - \vec{b}$ to be a unit vector? $(a) \frac{π}{6} (b) \frac{π}{4} (c) \frac{π}{3} (d) \frac{π}{2}$

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