The image you uploaded shows a trigonometric expression. Here's a clearer representation of the given equation:

$\frac{\cos \theta}{\csc \theta - 1} \cdot \frac{\csc \theta + 1}{\csc \theta + 1}$

Would you like help simplifying this expression or understanding its components? Let me know if you'd like any detailed steps or further explanation!

Here are 5 related questions to explore:

1. How do you simplify expressions involving secant and cosecant?
2. What is the relationship between sine, cosine, and cosecant?
3. Can you simplify other trigonometric expressions using identities?
4. How do you simplify products of fractions in trigonometry?
5. What are the basic trigonometric identities you should know for simplification?

Tip: When simplifying trigonometric expressions, always look for opportunities to use fundamental identities like $\csc \theta = \frac{1}{\sin \theta}$ or $\sec \theta = \frac{1}{\cos \theta}$.