# What is the difference between angular speed and tangential speed in a circular motion?

I was looking a long time for the way the equations of this two speeds are obtained, and i found pretty much nothing important, so can someone explain how are those obtained, and which is the difference between them?

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$$[\omega] = s^{-1}$$ $$\omega = \frac{v}{r}$$
where $\omega$ is angular velocity, $v$ is tangential velocity and $r$ is distance between the moving particle and axis of rotation.