Question

me ajudem de novo, pfv sz

Answer 1

teoria dos senos
AB/seno de 45 = 12/seno120
AB/√2/2=12/√3/2
AB2√3=24√2
AB=24√2/2√3
AB=12√2/√3( racionalizando)
AB=12√2.√3/v3.√3
AB=12√6/3
AB=4√6