угол <C=180-45-75=60
по теореме синусов
AC /sinB=AB/sinC
AC = AB/sinC * sinB =1дм /sin60 *sin45 =√(2/3)
угол <C=180-45-75=60
по теореме синусов
AC /sinB=AB/sinC
AC = AB/sinC * sinB =1дм /sin60 *sin45 =√(2/3)