This circle has the centre at the origin and a radius of 1 unit. The point P can move around ... also change. The graphs of \(y = \sin{\theta}\) and \(y = \cos{\theta}\) can be plotted.

This circle has the centre at the origin and a radius ... and sometimes negative depending on the value of \(\theta\). The graphs of \(y = \sin{\theta}\) and \(y = \cos{\theta}\) ...