Side BC of a triangle ABC has been produced to a point D such that ∠ACD = 120°. If ∠B = 12 ∠A is equal to(a) 80°(b) 75°(c) 60°(d) 90°

Side BC of a triangle ABC has been produced to a point D such that ∠

1.	Side BC of a triangle ABC has been produced to a point D such that ∠ACD = 120°. If ∠B = 12 ∠A is equal to(a) 80°(b) 75°(c) 60°(d) 90°
Answer» Side BC of a triangle ABC has been produced to a point D such that ∠ACD = 120°. If ∠B = $\frac{1}{2}$ ∠A is equal to (a) 80° (b) 75° (c) 60° (d) 90°