Answer:
60 degrees
Step-by-step explanation:
BWA is an isosceles triangle, meaning that BW and WA are equal in length.
Thus, we have that ABW and WAB are congruent to each other.
ABC is a complementary angle, so ABW and CBD add up to 90 degrees.
ABW is 30 degrees, so we have 30 degrees+ CBD=90 degrees.
Subtracting thirty degrees from both sides we get CBD=60 degrees.
Hope this helps!
