HELP ASAP will give brainliest,5 stars and a thanks if answer is correct〖cos〗^2 θ+tanθcosecθ=cosθ

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?

Which expression can be used to determine the slope of the line that passes through the points -6, three and one, -9

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