This is a central theme, covering the unit circle, sine/cosine functions, trigonometric equations, and transformation formulas. Roots and Powers: Working with -th roots and powers with rational exponents.

Because the profile level includes advanced problems, students and teachers often refer to supplementary materials for verification:

The profile-level course is designed for approximately (4 hours per week) and covers the following major content lines:

Deep dive into function properties, including periodicity, inverse functions, and graphing.

Basic elements of combinatorics, probability theory, and mathematical statistics.

Sets of numbers, properties of real numbers, and numerical sequences.