0\; \; \Rightarrow \\\\(x-3)(x-5)<0\\\\+++(3)---(5)+++\\\\\underline {x\in (3,5)}" alt="(sin3-sin5)(x-3)(x-5)\ \textless \ 0\\\\sin3\approx 0,16\; \; ;\; \; sin5\approx -0,9\; \; \Rightarrow \; \; (sin3-sin5)>0\; \; \Rightarrow \\\\(x-3)(x-5)<0\\\\+++(3)---(5)+++\\\\\underline {x\in (3,5)}" align="absmiddle" class="latex-formula">