It seems like you have an equation with both sine (sin) and cosine (cos) terms. In order to simplify an expression like this, we can use trigonometric identities. First, let's rewrite the expression as: 2sin + 5sin - 3cos Next, we can combine like terms by adding the sin terms together: (2sin + 5sin) - 3cos To simplify further, we can factor out sin: (2 + 5)sin - 3cos This simplifies to: 7sin - 3cos

To study for university exams, it is important to have a thorough understanding of the material. Here are some tips and strategies to help you prepare: 1. Review your notes and textbooks: Go through your lecture notes and textbooks to refresh your memory on the topics covered in the exam. Pay attention to key concepts, formulas, and examples. 2. Organize your study material: Create a study schedule or plan to allocate time for each subject. Break down your study material into smaller topics and focus on one topic at a time. Organize your notes, textbooks, and other study materials so that they are easily accessible. 3. Practice past exams and sample questions: Find past exam papers or sample questions relevant to your subject and attempt them under exam conditions. This will give you an idea of the format and types of questions you may encounter. 4. Seek help from professors or classmates: If you are struggling with certain topics, don't hesitate to ask for help. Reach out to your professors, teaching assistants, or classmates for clarification or guidance. Consider forming study groups or attending review sessions. 5. Make use of online resources: There are various online resources available that can help you study for your exams. Look for video tutorials, practice quizzes, or online forums where you can ask questions and interact with other students studying the same subject. 6. Take breaks and practice self-care: While studying is important, it is equally important to take breaks and give yourself time to rest and recharge. Make sure to get enough sleep, eat well, and engage in activities that help you relax and relieve stress. 7. Stay organized and manage your time effectively: Create a study schedule and stick to it. Allocate specific times for studying each subject and set goals for what you want to achieve during each study session. Avoid procrastination and make the most of your study time. Remember, everyone has their own studying style and what works for one person may not work for another. Experiment with different study techniques and strategies to find what works best for you. Good luck with your exams!