If $\overrightarrow{E}$ and  $\overrightarrow{B}$represent the electric and magnetic field vectors of the electromagnetic waves, then the direction of propagation of the electromagnetic waves is that of

The electric field and the magnetic field of an Electromagnetic wave are mutually perpendicular to each other and their direction of propagation is perpendicular to both the electric and magnetic fields.

If $\overrightarrow{\mathrm{E}}\text{ and }\overrightarrow{\mathrm{B}}$represent electric and magnetic field vectors of electromagnetic wave, then the direction of propagation of electromagnetic wave is along the direction of vector $\overrightarrow{\mathrm{E}}\times \overrightarrow{\mathrm{B}}$.