Familiar with basic concepts: Make sure that you have a good understanding of basic concepts (such as sine, cosine, tangent, cotangent, period, etc.). Before you start to study trigonometric functions in depth. If you are not familiar with these concepts, it may lead to the difficulty of subsequent learning.

Practice drawing: Try to draw various trigonometric functions, especially periodic functions and phase difference functions. This can help you better understand the period and amplitude of the function and help you predict and solve problems.

Study the formulas carefully: trigonometric functions have many important formulas, such as double angle formula, half angle formula, sum difference formula and so on. Studying these formulas carefully and understanding their meaning and usage can help you solve problems more efficiently and accurately.

Correct use of calculators: Although calculators may not be used in exams, correct use of calculators can help you better understand the concept and application of trigonometric functions in the learning process. For example, you can use a calculator to verify a formula or draw an image of a function.

Do more exercises: Practice is the key to learning trigonometric functions. Try to do different types of exercises, including solving trigonometric functions, solving trigonometric equations and proving identities. This can help you better master the application and theory of trigonometric function.

It takes time and energy to learn trigonometric functions. In the process of learning, keep patience and enthusiasm, and dare to try and explore. I believe you will gradually master its essence.