Let $F(x)=\int_{0}^{x} \sin t d t$ And $G(x)=\int_{0}^{x} \sin ^{2} t d t$

Essay

Let $F(x)=\int_{0}^{x} \sin t d t$ and $G(x)=\int_{0}^{x} \sin ^{2} t d t$ .If A, B, C, D, J, and K represent positive areas as shown in the graph, what combination of these areas represent G $(\pi / 2)$ on the graph?