In triangle ABC, AB = AC and side AB has been produced to a point D such that ∠ CBD = 150° . Then ∠ BAC is equal to
1
30°
2
60°
3
90°
4
120°
In triangle ABC, AB = AC and side AB has been produced to a point D such that ∠ CBD = 150° . Then ∠ BAC is equal to