Răspuns :
a, b masurile unghiurilor complementare
a+b=90° ; a-b=24°20', a=b+24°20', inlocuim pe a in prima relatie
b+24°20'+b=90°, 2b=90°-24°20'=89°60'-24°20=65°40' ; b=65°40'/2=64°100'=32°50'
a=90°-32°50'=89°60'-32°50' = 57°10'
a+b = 90° si a-b = 24°20'
↓
a = 24°20'+b
⇒24°20'+b + b = 90° adica: 2b = 90° - 24°20' = 89°60'-24°20'= 65°40'
b = 65°40' : 2 = 32°30'+20'=32°50'
a = 24°20'+32°50'=56°70'=57°10'