In Example 1, $AB = AC$ and $BA$ is produced to $D$ such that $AD = AC$. Then $\angle BCD$ equals—

Question

Accepted Answer

$1$ right angle

Answer

$45°$

Answer

$60°$

Answer

$120°$

In Example 1, AB=ACAB = ACAB=AC and BABABA is produced to DDD such that AD=ACAD = ACAD=AC. Then ∠BCD\angle BCD∠BCD equals—