Trigonometry | Khan Academy
Explore the world of trigonometry by mastering right triangles and their applications, understanding and graphing trig functions, solving problems involving non-right triangles, and unlocking the power of trigonometric equations and identities. This course builds foundational skills and real-world problem-solving techniques essential for advanced math and science studies.
概览
收录于
2026年3月18日
学科与领域
math · trigonometry
年级范围
九年级（高一）–十二年级（高四）
页面类型
Course
简介
Khan Academy: Trigonometry Course Overview
This course provides a comprehensive study of trigonometry, organized into four primary units covering right triangles, functions, non-right triangles, and equations/identities.
- Unit 1: Right Triangles & Trigonometry
- Focuses on ratios (sine, cosine, tangent), reciprocal ratios, and solving for unknown sides and angles.
- Includes applications such as right triangle word problems and the relationship between complementary angles.
- Unit 2: Trigonometric Functions
- Covers the unit circle, radians vs. degrees, and the Pythagorean identity.
- Explores the properties of sinusoidal functions, including amplitude, midline, period, and phase shifts.
- Includes graphing techniques and modeling real-world scenarios (e.g., temperature, length of day).
- Unit 3: Non-Right Triangles & Trigonometry
- Covers the Law of Sines and the Law of Cosines for solving oblique triangles.
- Unit 4: Trigonometric Equations and Identities
- Focuses on inverse trigonometric functions and solving sinusoidal equations.
- Covers angle addition identities and their application in finding trig values, side lengths, and manipulating expressions.
- Assessment Structure: Each unit includes multiple quizzes and a final unit test to evaluate student mastery.
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