Two plane electromagnetic waves travel along the z-axis, one moving to the right, and the other moving to the left both with the same frequency. their resulting magnetic fields are described by: b,(z, t): b1 cos(-kz-ut) i b2(z, t)-b2 sin(kz-ot) j note: bold font indicates a vector. i and j are unit vectors.) if b1 = 0.051 t, b2 = 0.036 t, and the frequency of the waves is 485mhz, what angle does the magnetic field make with the x-axis at t=0s and z=1.2m? measure from the x-axis; positive is counterclockwise and negative is clockwise.