opsi 1. 30°
opsi 2.60°
opsi 3.30°
opsi 4.50
jawab cepet banhhh lg ulangan
opsi 2.60°
opsi 3.30°
opsi 4.50
jawab cepet banhhh lg ulangan
[tex] < b + 60° + 70° = 180° \\ < b + 130° = 180° \\ < b = 180° - 130° \\ < b = 50°[/tex]
[answer.2.content]
