Hello Irah, as Tutor Nicholas mentioned in his explanation, you would need to make use of the fact that the triangle is a reflection.

I have slightly different triangle from him, making use of the answers you got prior to build up on this question.

Triangle BAE is also possible. It is just that you would have to find out AB as an additional step. Angle BAE can also be found with the same method as how I find BCE.

Cheers and good job