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Learn trigonometry—right triangles, the unit circle, graphs, identities, and more.
Learn about trigonometric functions and the unit circle with Khan Academy's free online resources.
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Let's extend trigonometric ratios sine, cosine, and tangent into functions that are defined for all real numbers. You might be surprised at how we can use the behavior of those functions to model real-world situations involving carnival rides and planetary distances.
Khan Academy
Lesson 7: Solving for an angle in a right triangle using the trigonometric ratios. Intro to inverse trig functions.
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Learn how to use trig functions to find an unknown side length in a right triangle.
Trigonometry 4 units · 36 skills. Unit 1 Right triangles & trigonometry. Unit 2 Trigonometric functions. Unit 3 Non-right triangles & trigonometry. Unit 4 Trigonometric equations and identities. Course challenge. Test your knowledge of the skills in this course. Start Course challenge. Math.
Students graph sinusoidal and other trigonometric functions, and use the graphs to help in modeling and discovering properties of trigonometric functions. The study of the properties culminates in the proof of the Pythagorean identity and other trigonometric identities."