sin135° =sin(90°+45°) =cos45° =1/√2
MN/sinK =MK/sinN (т синусов) =>
4√2/sin135° =4/sinN => sinN =1/2 => ∠N=30° (0°<N<180°)
∠M =180°-∠K-∠N =180°-135°-30° =15°
sin135° =sin(90°+45°) =cos45° =1/√2
MN/sinK =MK/sinN (т синусов) =>
4√2/sin135° =4/sinN => sinN =1/2 => ∠N=30° (0°<N<180°)
∠M =180°-∠K-∠N =180°-135°-30° =15°