Answer:
[tex]\frac{1}{\cos^2(\theta)}[/tex]
Step-by-step explanation:
We know that [tex]\tan(\theta) = \frac{\sin(\theta)}{\cos(\theta)}[/tex] and [tex]\csc(\theta) = \frac{1}{\sin(\theta)}[/tex] by definition. So
[tex]\tan^2(\theta) \cdot \csc^2(\theta) = \frac{\sin^2(\theta)}{\cos^2(\theta)} \cdot \frac{1}{\sin^2(\theta)} = \frac{1}{\cos^2(\theta)}[/tex].
