As the point P moves anti-clockwise round the circle from (1, 0), the angle \(\theta\) increases until P returns to its starting position at ... of \(\theta\). The graphs of \(y = \sin{\theta}\) ...

In a function such as sine or cosine, we could also have a translation of the form: \(y = \sin (x - a)^\circ\) where \(a\) is called the phase angle. This is when the graph of the function has ...