(a)[3]
Find the three positive integers $a$, $b$ and $c$.
(b(i))[1]
For these values of $a$, $b$ and $c$, use the diagram provided to find how many solutions there are in the interval $0 \leq x \leq 2\pi$ for the equation $a\cos(bx) + c = \frac{6}{\pi}x$.
(b(ii))[1]
For these values of $a$, $b$ and $c$, use the diagram provided to find how many solutions there are in the interval $0 \leq x \leq 2\pi$ for the equation $a\cos(bx) + c = 6 - \frac{6}{\pi}x$.