In a triangle ABC angle C =3 angle B = 2 (angle A+ angle B). What are the three angles? C = 2(A+B) C = 3B, or 2(A+B) = 3B, or 2A+2B=3B, or B=2A. C =2(A+2A) = 6A A+2A+6A = 180 or 9A = 180. Or A = 20 deg. B = 40 deg, C = 120 deg. Reply
In a triangle ABC angle C =3 angle B = 2 (angle A+ angle B). What are the three angles?
C = 2(A+B)
C = 3B, or
2(A+B) = 3B, or
2A+2B=3B, or
B=2A.
C =2(A+2A) = 6A
A+2A+6A = 180 or 9A = 180.
Or A = 20 deg. B = 40 deg, C = 120 deg.