questions about trigonometric

1. What is trigonometry?

2. How are trigonometric functions defined?
3. What are the six trigonometric functions?
4. How are trigonometric functions used to solve triangles?
5. What are the primary identities in trigonometry?
6. What is the unit circle and how is it used in trigonometry?
7. What is the Law of Sines and how is it applied?
8. What is the Law of Cosines and how is it applied?
9. How are trigonometric functions used in real-world applications?
10. What are inverse trigonometric functions and how are they used?