When a charged particle moving with velocity $\overrightarrow{V}$ is subjected to a magnetic field of induction $\overrightarrow{B}$ the force on it is non-zero, This implies that:

When a charged particle q is moving in a uniform magnetic field $\overrightarrow{B}$ with velocity  $\overrightarrow{V}$ such that angle between $\overrightarrow{V}\text{\hspace{0.17em}and\hspace{0.17em}}\overrightarrow{B}$ be $\theta$,then due to interaction between the magnetic field produced due to moving charge and magnetic field applied, the charge q experiences a force which is given by 

$\text{F}=\text{qvB}\sin \theta$

if$\theta =0°or180°,\text{\hspace{0.17em}then\hspace{0.17em}}\sin \theta =0$

$\therefore \text{F}=\text{qvB\hspace{0.17em}}\sin \theta =0$

Since, force on charged particle is non – zero, so angle between $\overrightarrow{V}\text{\hspace{0.17em}and\hspace{0.17em}}\overrightarrow{B}$ can have any value other than zero and $180°$