where \({\theta}\) is measured anti-clockwise from the positive \(x\)-axis. As the point P moves anti-clockwise round the circle from (1, 0), the angle \(\theta\) increases until P returns to its ...

The tan function takes ... sides with information in the diagram. The only equation that contains both \(o\) and \(h\) is the sine (sin) ratio. Practise finding angles in right-angled triangles ...