Question

What happens when two waves have a phase difference of 90 degrees?

Answer 1

Answer:

The phase difference between two sine waves. The left is a 90° phase difference; the right is a 180° difference. “90 degrees out of phase” means when one wave is at zero, the other will be at its peak (see Figure 1.4.) In other words, when the green wave is at 0° phase, the blue wave is at 90°.