The sine angle is in radians and ω is the frequency in radians. The Φ stands for a phase shift. So you can think of A as the amplitude ... no matter the actual size of that circle.

Amplitude modulation changes the amplitude — or ‘volume’, if you will — of a carrier frequency and turns all radio into channels owned and operated by a church. Frequency modulation ...

You need to know about these quantities used in waves - what they mean, the symbols used for them and the units used to measure them. Don't get confused with this quantity frequency. It is not a ...

The greater the amplitude of a wave then the more energy it is carrying. Don't get confused with this quantity frequency. It is not a distance travelled by waves, nor is it a speed, although it is ...