100град-(90+60)=30град
т.к.CAB=30грал,то : AB/2=BC
BC=26,4-AB
AB/2=26,4-AB
AB*2=26,4-AB
AB=(26,4-AB)/2
2AB/2=(26,4-AB)/2
(2AB-26,4+AB)/2=0
3AB-26,4=0
AB=8,8см.
100град-(90+60)=30град
т.к.CAB=30грал,то : AB/2=BC
BC=26,4-AB
AB/2=26,4-AB
AB*2=26,4-AB
AB=(26,4-AB)/2
2AB/2=(26,4-AB)/2
(2AB-26,4+AB)/2=0
3AB-26,4=0
AB=8,8см.