<span>5243,2+(5243,2-1038,43)+(5243,2+(5243,2-1038,43)-6328)=12567,94</span>
<span>sin 7</span>π/<span>3= sin(2</span>π<span>+</span>π<span>/3)=sin </span>π<span>/3=</span>√<span>3 / 2</span>
23|_9
-18|2,55
50
-45
50
-45
50...
23:9=2,(5) ; 5 в периоде