Sine Wave with Phasor
This is a sine wave with a corresponding phasor diagram to its left. Notice how the overall phase of the wave is decreasing in time due to the fact that is negative. This means the phasor rotates clockwise and also guarantees that the wave travels in the +x direction.
Please try different values of the various sliders to see the effect. Notice that you can change the location along the wave, x. The phasor - even animated as it is - only corresponds to a single position in space.