Question

дано треугольник kmn угол k=90 sinM=8/17 Km=30 Найти Nk,Mn

Answer 1

cosM = √(1-sin²M) = √(1-(8/17)²) = √(1-64/289) = √(225/289) = 15/17

MN = MK/cosM = 30 : 15/17 = 30 · 17/15 = 2 · 17 = 34

NK = MN·sinM = 34 · 8/17 = 2 · 8 = 16