What are the marked angles? Are they BCE and DCE?

Refer to interactive solution 17.45 to review a method by which this problem can be solved. the fundamental frequencies of two air columns are the same. column a is open at both ends, while column b is open at only one end. the length of column a is 0.504 m. what is the length of column b?

Adiverr from the university of florida women’s swimming and diving team is competing in the ncaa zone b championships

What is the relationship between all triangles that can be drawn given the same three angles