One component of a magnetic field has a magnitude of 0028 t

Question

Compute all parts of given problem:

Problem: One component of a magnetic field has a magnitude of 0.028 T and points along to +x axis, while the other component has a magnitude of 0.078 T and points along the -y axis. A particle carrying a charge of +1.50 x 10^-5 C is moving along the +z axis at a speed of 2.20 x 10³ m/s.

Part A: find the magnitude of the net magnetic force that acts on the particle?

Part B: Determine the angle that the net force makes with respect to the +x axis?

I need help to determine the angle that the net force makes with respect to the +x axis.