If \(\vec{a}\) and \(\vec{b}\) are two vectors, then angle between vectors \(\vec{a}+\vec{b}\) and \(\vec{a}\times \vec{b}\) is
Answer & explanation
Correct answer: option 3
\(\cos \theta=\frac{(\vec{a}+\vec{b})\cdot (\vec{a}\times \vec{b})}{|\vec{a}+\vec{b}||\vec{a}\times \vec{b}|}\)=0, so option (c) is correct