Three electromagnetic waves travel through a certain point P along an x axis. They are polarized...

Three electromagnetic waves travel through a certain point P along an x axis. They are polarized parallel to a y axis, with the following variations in their amplitudes. Find their resultant at P

E₁ = (10.0 µV/m) sin[(2.0 x 10¹⁴ rad/s)t]

E₂ = (5.00 µV/m) sin[(2.0 x 10¹⁴ rad/s)t + 45.0°]

E₃ = (5.00 µV/m) sin[(2.0 x 10¹⁴ rad/s)t - 45.0°]