Master trigonometry concepts, solve problems with triangles, graph functions, and explore equations for advanced math and science studies on Khan Academy.

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Discover how to measure angles, distances, and heights using trigonometric ratios and the unit circle. Learn how to use sine, cosine, and tangent to solve real-world problems involving triangles and …

In this unit, you'll explore the power and beauty of trigonometric equations and identities, which allow you to express and relate different aspects of triangles, circles, and waves. You'll learn how to use …

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In this video, I want to give you the basics of trigonometry. And it sounds like a very complicated topic, but you're going to see that it's really just the study of the ratios of sides of triangles.

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Not only are right triangles cool in their own right (pun intended), they are the basis of very important ideas in analytic geometry (the distance between two points in space) and trigonometry.

It's important in trigonometry because it allows us to define the sine and cosine functions in terms of the x - and y -coordinates of a point moving around the circle.