Practice Questions
| 1. | Prove the given trigonometric equation Difficulty: medium | 
                                    
                                    5
                                 | 
| 2. | Explain the given trigonometric equation by matching correct options Difficulty: medium | 
                                    
                                    4
                                 | 
| 3. | Choose the correct answer Difficulty: hard | 
                                    
                                    5
                                 | 
| 4. | Show the given trigonometric equation Difficulty: hard | 
                                    
                                    5
                                 |