" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
sudut ACB = 180° - 3x + 5°
60° + 180° - 4x - 10° + 180° - 3x + 5° = 180°
60° + 180° + 180° - 180° + 5° = 4x + 3x
60 + 180 + 5 = 7x
245 = 7x
x = 245/7 = 35°
sudut ABC = 180° - (4x - 10°)
sudut ABC = 180° - (4.35° - 10°)
sudut ABC = 180° - (140° - 10°)
sudut ABC = 180° - 130°
sudut ABC = 50°
ABC = 50° (A)