If $\bar{a}, \bar{b}$ are two non-parallel unit vectors and the vector $\alpha \bar{a}+\bar{b}$ bisects the…
If $\bar{a}, \bar{b}$ are two non-parallel unit vectors and the vector $\alpha \bar{a}+\bar{b}$ bisects the internal angle between $\bar{a}$ and $\bar{b}$, then $\alpha$ is equal to