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Let \(\vec{p}\) and \(\vec{q}\) be two unit vectors and \(\alpha\) be the angle between them. Then \((\vec{p}+\vec{q})\)…

Q1

Let \(\vec{p}\) and \(\vec{q}\) be two unit vectors and \(\alpha\) be the angle between them. Then \((\vec{p}+\vec{q})\) will be a unit vector for what value of \(\alpha\) ?

a

\(\frac{\pi }{4}\)

b

\(\frac{\pi }{3}\)

c

\(\frac{\pi }{2}\)

d

\(\frac{2\pi }{3}\)

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