Объяснение:
1)
B = 68°
C = 33°
A = 79°
2)
3x+19°+5x+24° = 163°
8x = 120
x=1.5
B = 31.5°
A = 23.5°
3)
B = 30°
C = 60°
CK = 1/2 BC = 7.35 см
Объяснение:
1)
B = 68°
C = 33°
A = 79°
2)
3x+19°+5x+24° = 163°
8x = 120
x=1.5
B = 31.5°
A = 23.5°
3)
B = 30°
C = 60°
CK = 1/2 BC = 7.35 см