At one instand

=(-3.24i + 4.38j-6.63k) m/s is the velocity of a proton in a uniform magnetic field

=(2.58i-2.84j+6.03k)mT. At that instant what are the a) x, b) y, and c) z components of the magnetic force

on the proton? What are d) the angle between v and F and e) the angle between v and B?
Please help me with the formulas if you can I really appreaciate it.