I.
Trigonometric ratios
01 Trigonometric functions
02 Application of trigonometric functions

Ⅱ.
Properties of a circle
03 Circles and lines
04 Central angle
05 Application of central angle

Ⅲ.
statistics
06 Representative values ​​and scatter plots
07 Scatterplot and Correlation

Core Concepts + 100-Point Notes
- Includes essential content for a complete understanding of the unit.
- Includes examples, references, etc. to help you understand the concept.
- Presenting the teacher's 100-point know-how in a diagrammatic and structured manner
- Link problem numbers to 100-point notes to help students understand concepts through problems.

Questions that are sure to appear on the exam
- Includes essential questions to develop problem-solving skills in exams
- Includes representative questions from excellent middle schools in each school district, carefully selected for each concept.
- The questions are structured so that you can basically get 80 points in the actual exam.

Problems for Grade A
- Includes various types of problems that can trip up Grade A students
- Includes predictive questions on the new trends of middle schools in excellent school districts
- Includes problems that students are likely to make mistakes in during actual exams.
- Includes descriptive questions to help develop logical thinking.
- Strengthen your ability to solve difficult problems by including challenging problems with a correct answer rate of less than 50%.

Comprehensive Thinking Challenge Problems
- Includes cross-curricular integration problems and real-life problems from middle schools in excellent school districts.
- Problems are structured to develop comprehensive thinking and application skills.
- It is designed to help you achieve an A grade by containing difficult, descriptive questions with incomparable discrimination compared to other problem books.

Preview of academic achievement assessment
- Thoroughly analyzed the questions from the National Academic Achievement Test for the first year of high school and included representative questions that frequently appear in the relevant unit.
- Includes trends and strategies for each type of question to help you develop problem-solving skills.

Answers and explanations
- A real commentary that you can learn just by reading
- Includes clear and detailed explanations so that problem-solving methods can be understood just by reading the explanations.
- For challenging problems, step-by-step solution strategies are presented, and explanations are provided so that students can understand what methods and thought processes are required to solve the problem.
- Blacklabel special lectures on essential concepts, essential principles, solution clues, solution corrections, and explanations of extracurricular knowledge are provided so that students can learn by reading the explanations alone without having to open other books.

1.
Step-by-step learning project to create an A grade?
Will my skills improve simply by solving easy problems? Will my skills improve if I simply solve a lot of difficult, high-difficulty problems with complex calculations and a clear departure from actual exam trends? If you truly want to improve your skills, you need to solve a lot of high-quality, differentiated, and superior new-trend problems, like those on past exams.
Black Label is designed to provide step-by-step, intensive study, from excellent past exam questions to discriminating new trends that contain the study secrets of top school district middle schools, and genuine A-level questions that assess comprehensive thinking skills.
The structure of the questions in Black Label is different.
Black Label has a diamond-style question structure that reverses the problem composition ratio of existing top-tier workbooks, with more than 50% of the questions being of 'high' difficulty.
This is a true A-grade workbook that can be compared to other companies' A-grade workbooks that have fewer 'high' difficulty problems.


2.
Are you curious about the study secrets of students in middle schools in excellent school districts?
Must-have, representative questions from excellent past exams! - Includes frequently appearing questions from middle schools in top school districts.
Plenty of practice with "real A-grade problems"! - Gangnam District 8's special best-practice questions
The secret to achieving an A grade in Gangnam District 8! - Studying with integrated, comprehensive thinking questions that transcend traditional formats.
Linking Middle School Problems with High School Academic Achievement Tests! - Includes high school 1st grade Academic Achievement Test questions for each unit.

3.
Want to see a 'real A-grade workbook'?
Find out! Who wrote it? - Written by a teacher from Jasago and Gangnam District 8.
Check it out! Who reviewed it? - Gangnam District 8 Instructor Review
Find Out! Who's Studying? - A Must-Read for A-Grade Students

4.
Want to experience a differentiated commentary?
Step-by-step solution strategy
Clear explanations and various other solutions
Blacklabel special lectures on essential concepts, essential principles, solution clues, solution corrections, and explanations of extracurricular knowledge.