- The diagram shows a sketch of part of the curve with equation \(y = 2 \sin x + 3 \cos ^ { 2 } x - 3\). The curve crosses the \(x\)-axis at the points \(O , A , B\) and \(C\).
\includegraphics[max width=\textwidth, alt={}, center]{9bb29d6e-2dbb-4212-b3e0-45e7b12c0c43-20_620_1009_516_520}
Find the value of \(x\) at each of the points \(A , B\) and \(C\).