This circle has the centre at the origin and a radius of 1 unit. The point P can move around the circumference of the circle. At point P the \(x\)-coordinate is \(\cos{\theta}\) and the \(y ...

will sometimes be positive and sometimes negative depending on the value ... The line \(y = 0.75\) crosses the graph of \(y = \cos{x}\) four times in the interval \(-360^\circ \leq x \leq 360 ...