60-43 = 17 secunde
60-1-35=24 minute 1 = 43+17 = 60 sec = 1 min
180-67-1= 112 grade 1= 35 +24 +1=60 min = 1 grad
unghiul suplementar 112 grade 24 min 17 sec
2 a si b unghiuri complementare adica a+b=90grade
bisectoare le impart in unghiuri egale
a/2+b/2 =(a+b)/2 = 90/2 = 45 grade