Learn how to use the unit circle to define sine, cosine, and tangent for all real numbers.

Practice your understanding of the unit circle definition of sine and cosine.

The unit circle can be seen as an extension or generalization of SOHCAHTOA, as it provides a broader and more comprehensive understanding of trigonometric functions beyond just right triangles.

What are unit circle trigonometry problems? The problems in this lesson involve circles and angle measures in radians, a unit for angle measure much like degrees. We can use radian measures to …

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 …

Practice your understanding of the unit circle definition of sine and cosine.

Review the unit circle definition of the trigonometric functions.

Get more practice with the unit circle definition of sine and cosine, this time with radians instead of degrees.

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 …

Unit circle trigonometry: foundations more than one correct answer You can enter up to 5 characters for a positive answer and up to 6 characters (including the negative sign) for a negative answer. If your …