Respuesta :

[tex]\frac{sec(\theta)}{tan(\theta)} = csc(\theta)[/tex]
[tex]\frac{1}{cos(\theta)} \div \frac{sin(\theta)}{cos(\theta)} = csc(\theta)[/tex]
[tex]\frac{1}{sin(\theta)} = csc(\theta)[/tex]
[tex]csc(\theta) = csc(\theta)[/tex]