Side BC of a triangle ABC has been produced to a point D such that ∠ACD=120∘. If ∠B=12∠A, then ∠Ais equal to

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, then ∠Ais equal to
Answer» Side BC of a triangle ABC has been produced to a point D such that $∠ A C D = 120^{\circ} .$ If $∠ B = \frac{1}{2} ∠ A,$ then $∠ A$ is equal to